Honda direct TPMS systems are different compared to domestic TPMS systems because they require a scan tool or a TPMS tool that connects to the OBDII port to program sensor IDs and positions. There are no special tricks or procedures to avoid this process. However, there are exceptions to the rule, like the Honda Pilot (automatic relearn) and vehicles that have indirect TPMS systems, like the Civic and Accord on 2013 to current models.
Most dedicated TPMS tools can activate the sensor to collect the sensor ID and its position on the vehicle. It then feeds the information through the OBDII port to the TPMS module. It is possible to key in the sensor IDs using a scan tool that can access the TPMS module.
The magic number for Honda direct TPMS systems is 28 mph. Once the vehicle has reached 28 mph for at least one minute, it confirms the sensor signals, IDs and pressures. The 28 mph is not detected by the sensors, but rather through the serial data bus and the TPMS module. Honda reasons that, at this speed, there is less of a chance of interference from other sensors and radio frequencies.
If a customer comes in with a TPMS light on solid, inflate the tires and test-drive the vehicle at 28 mph or more for at least one minute, and the low tire pressure indicator should go off. The 28 mph rule should also be followed after every relearn or reprogram procedure.
For indirect systems, there are three magic numbers in the form of: 40-60 mph for 20 minutes. The process is initiated by pressing the TPMS reset button or information center in the instrument cluster.
Hondas typically have two TPMS lights in the instrument cluster for direct systems. One light is the ISO-standard tread light that indicates there is a low tire. The other light is a “TPMS” (spelled out) light that is a warning/MIL indicator light. When a Honda TPMS system detects a problem, the TPMS control unit sets a code, but shifts to fail-safe mode and does not alert the driver to low tire pressures.
Once the code is set, on the next key cycle, the TPMS light will flash between 30-90 seconds and then remain on. A healthy system will flash the light for two seconds and then turn off.
TPMS codes in the non-volatile memory will not be cleared by disconnecting the battery. Clearing a code will require a scan or TPMS tool that can communicate with the TPMS module. The memory can hold all the TPMS codes that could possibly be set. But, when the same code is detected more than once, the most recent one overwrites the previous one, so only the latest DTC of each type is stored.
When a flat tire is replaced with the spare tire on a vehicle with a direct system, the TPMS indicator comes on (DTC 32, 34, 36 or 38) because the system is no longer receiving the signal from the flat tire’s transmitter. This is not a problem with the spare tire.
Honda indirect TPMS systems do not have air pressure sensors inside the tires. Rather, they detect a low tire by comparing relative wheel speeds via the anti-lock brake system (ABS) wheel speed sensors.
When a tire loses air, its diameter decreases slightly. The highly popular Honda Accord switched to indirect TPMS for the 2013 model year. Recalibrating the system should be performed when the inflation is corrected or changed. The procedure does not involve any tools. The calibration is initiated by either a TPMS reset button below the steering wheel or using a series of button presses in the i-Mid driver information center. You can initiate the procedure, but let the customer do the driving.
Press and hold the TPMS button underneath the left side of the dashboard until the Low Tire Pressure/TPMS indicator blinks twice.
If the indicator does not blink, press and hold the button again. Calibration will be complete after 20 minutes of cumulative driving at 30 to 60 mph.
If successful, you will see “Calibration Started.” If you see “Calibration Failed to Start,” repeat steps 2 and 3. Calibration will be complete after 20 minutes of cumulative driving at 30 to 60 mph.
The display switches to a customization screen where you can choose between Cancel or Initialize. When calibration is complete you will see TPMS has been initialized followed by a return to the customization menu. If you see “Unable to initialize TPMS,” repeat steps 3 and 4. Calibration will be complete after 20 minutes of cumulative driving at 30 to 60 mph.
Check out the rest of the April digital edition of Tire Review here.
In this article:TPMS Service
By John Goreham G+ Oct 21 2020 - 12:33pm
If you have a Honda Acccord with the low tire pressure warning light on, here is what to do and why it came on.
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Tire pressure monitoring systems are required on new vehicles by law in America. This is not a feature that Honda installs as a feature on just some Accord trims. For more than a decade, Honda has been installing systems and they have been driving some Honda Accord owners crazy.
They certainly do help let you know if a tire is losing pressure. However, in many cases, these systems can be an annoyance as well.
Here are the reasons that your Honda Accord has a “Tire Pressure Monitoring System” alert. We will refer to it as “TPMS” from here forward in our story. Before we begin, if your TPMS system warning light is on now, pull to safety and immediately check your tire pressure. Some vehicles can display the pressure in the vehicle's information display. If your Accord doesn’t, use a tire pressure gauge to check the pressures. The correct setpoints for your Honda Accord are listed on the driver’s door. Do not drive your Accord with the TPMS light on without verifying that the tires have proper air pressure.
Accord Tire Pressure Warning - Temperatures Have Dropped
If seasonal temperatures are dropping and your TPMS warning light has illuminated, the reason is most likely due to the temperature difference between when the pressure was last set and the current temperatures.
The pressure inside of a tire drops with temperature declines. You need to reset the tire pressure in early winter and also early summer. Lower pressure does not mean the air leaked out of your tires. The air inside simply became lower in pressure as the temperatures dropped. This happens to all tires, not just those in your Accord, regardless of which gas is inside of them (air or nitrogen).
If you find that the pressure inside your tires is lower than the setpoint, add air to top them off to the correct pressure. The TPMS light will normally go out shortly after you set the pressures to the proper level. If just a single tire is lower than the rest by more than around 30%, have a tire technician investigate.
Accord Tire Pressure Warning - You Have a Flat Or More Than One Flat
The reason you have a tire pressure monitoring system in your Accord is to detect a flat tire. Or possibly more than one flat tire. If the light comes on while you are driving, this is the likely cause.
Pull off the road to a safe area as quickly and safely as you can to investigate. A brief visual inspection is not enough. Use a tire gauge to check the pressure in all four of the vehicle's tires. If you have a flat, refer to the Accord's owner’s manual (see below) on what to do.
Accord Tire Pressure Warning - TPMS System Failure
A driver's initial reaction when a warning light comes on is to hope it is just a mistake. The TPMS system in your Accord may have a problem, but it is unlikely. Many people who has a problem with the tire pressure system in any vehicle quickly go to every Facebook forum to report it (angrily). However, the Honda Accord is not a vehicle that struggles with the TPMS system more so than others.
If you have checked that the pressure in your tires is correct using a tire gauge, and the TPMS system is displaying a warning, ask a mechanic for help. You don’t have to go to a Honda dealer, but if your Accord is under the initial new vehicle warranty, that would certainly make sense.
Like any system in your Accord, age and damage can cause a problem with the TPMS system. Individual sensors in the tires can be replaced, but the system's computer will still need to be re-initialized. We suggest that this job is best done by a mechanic or tire professional who understands the system and can handle the work.
Accord Tire Pressure Warning - Tire Sealants
Emergency tire sealants like Fix-A -Flat, or Slime may cause your TPMS sensor to malfunction. This does not mean that the sensor is now broken. Here is what the Fix-A-Flat brand says about TPMS sensors and its product: “Fix-a-Flat is tire sensor safe. After the qualified tire repair professional has repaired your tire, they should clean the TPMS device with water to remove any sealant that may have come into contact with the device. After the repaired tire is replaced and inflated, the TPMS system can be reset and will resume operating as normal.”
Accord Tire Pressure Warning - New Tire Or New Tires
If you buy new tires for your Accord and immediately get a tire pressure warning light, check the pressure.
Flats can happen any time, even driving out of a tire shop parking lot. If you have checked the pressure and it is properly set, return to the tire shop and let them know that the Accord’s TPMS system has indicated a problem. If the shop changed the valve stems in the tires, the system's computer may need to be re-initialized.
Be aware that some TPMS systems are sensitive to the sizes of tires. You should only use the exact size tire your Accord came with. If you have mounted aftermarket wheels with a different size tire, the retailer who did the work should be able to explain to you how they will resolve the TPMS system errors.
Accord Tire Pressure Warning - Nitrogen Is Unnecessary
There are some dealers and shops that suggest nitrogen as a solution to a TPMS problem in an Accord. The claims that these advocates of nitrogen for tires make are unfounded by science.
Furthermore, your Honda Accord was designed to work perfectly fine using compressed air.
Can inflating an underinflated tire with nitrogen cause the TPMS light to go out? It might. Just as inflating the tire with compressed air should do. If you wish to spend money on nitrogen, feel free. Just know that the Accord doesn’t need it.
A TPMS system alert can be an annoyance, but for the most part, it is a feature that is intended to help us in case a dangerous situation develops. Add air to your Accord’s tires when temperatures begin to drop in early winter. Reset the pressure to the proper PSI again in early summer. These are the best two habits you can have to avoid TPMS issues in your Accord.
Resources:
Honda Accord Manual
Accord Tire Pressure Frequently Asked Questions:
Q: How do you reset the TPMS light on a Accord?
A: Use the owner's manual link at the bottom of the story to find your Accord’s year and instructions. Follow them, but be aware that resting the system may not solve the underlying issue.
Q: Can the TPMS be in the Accord turned off?
It cannot be turned off. It can be reset.
Q: Is it dangerous to drive with the tire pressure light on?
A: Yes, driving without knowing why the light is on is dangerous until you have checked the pressure with a tire pressure gauge to verify that the pressures are correctly set.
John Goreham is a long-time New England Motor Press Association member and recovering engineer. Following his engineering program, John also completed a marketing program at Northeastern University and worked with automotive component manufacturers. In addition to Torque News, John's work has appeared in print in dozens of American newspapers and he provides reviews to many vehicle shopping sites. You can follow John on Twitter, and view his credentials at Linkedin
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When the tires are optimally inflated, the low tire pressure indicator (TPMS) does not light up on the vehicle's dashboard. However, in some cases, it lights up even if the pressure is normal. This can't help but be annoying, especially when the tires are inflated normally. In our article today, we will figure out how to reset a tire pressure error.
American and European scientists conducted a study, during which it was found that most drivers do not check whether the wheels are properly inflated before getting behind the wheel of a car. Only 40% of car owners perform such a check - and even then only once every 12 months.
This is the reason for a large number of accidents.
The TPMS (Tyre pressure monitoring system) system is designed to monitor tire pressure, as well as warn of a malfunction. If the tires are under-inflated or over-inflated, an error will be displayed on the remote control or an audible signal will appear.
What is dangerous too high or, conversely, low pressure? The risk of an accident increases, the car begins to consume more fuel, in addition, the rubber wears out faster.
Photo: Shutterstock
The above devices operate on the same principle. Let's figure out how information about what tire pressure gets to the control panel.
Otherwise, when the tires should be lowered a little, the program sends a signal to the car owner. Exactly according to the same principle, a signal is transmitted if the rubber needs to be pumped up. Consider how pressure is calculated by measuring instruments. Typically, the sensor performs a comparison of the angular rotation of the wheel. Knowing the value of this parameter, you can calculate the distance that the wheel will travel in one rotation.
Obviously, if the tires are under-inflated or over-inflated, then the outer diameter of the wheel will be different. Visually, a person cannot determine this change. But the sensor notices even such changes.
The system fixes non-compliance with the required parameters.
The sensor will still respond, despite the fact that the wheel circumference has changed quite a bit. In this situation, it is necessary to find out what mechanical reason led to this. Only in this way can you eliminate the misinterpretation of the signals transmitted by the system. This can happen because:
Also, the TPMS system gives an error when you install new wheels or rearrange them.
When, after these steps, a tire pressure error appeared, indicating unbalance, you should reset the settings, and then set the basic parameters. In this case, the control signal may remain even if the basic settings have been selected.
Why such problems may occur:
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How to reset tire pressure error? To begin with, imagine that the TPMS system is working properly and the blinking light indicates a problem with the undercarriage of the machine.
The first thing you should do is slowly release the gas. You can not brake sharply, turn the steering wheel. After the car has stopped, inspect the tires to make sure the rubber is not punctured or broken. Then you can check if the tire pressure is normal.
Pay attention! The TPMS will not always show a tire pressure error. For example, if the tires are slowly deflating, the system will not inform you about the problem. In the same way, she will not notice the error if the tire pressure starts to drop rapidly. This usually happens when a tire ruptures. This feature of the TPMS system is explained by the specifics of identifying and counting nonconformities.
However, in some cases, it happens that the TPMS system indicator is on, but the tires are in perfect condition. How to reset tire pressure error? We understand.
The complex TPMS system in some cases starts to work incorrectly.
Usually, car owners observe the following picture: a tire pressure error is displayed on the display (the tire is underinflated), but in reality everything is fine with the wheel. You have to reset the tire pressure error. Otherwise, the TPMS system starts to work incorrectly.
Photo: Shutterstock
You also have to reset the tire pressure error when there is radio interference from high voltage power lines. Or when sources of radio signals are located in the immediate vicinity. But as soon as you move away from them, the pressure error disappears and the system begins to function properly.
The reason for the malfunction may lie in the sensor, which is "failed". This damage cannot be easily repaired. How to reset a tire pressure error if the sensor flashes, while you hear a beep, lose your vigilance and find it difficult to drive a car? There are 4 ways to fix this problem.
To reset the error, pick up a speed of 80 km / h and continue driving for another 15 kilometers.
This method is the easiest to implement. If your car has this feature, then turn on the cruise control so that the speed does not change. Depending on the model of your car, you will be able to reset the tire pressure error at a speed that exceeds the specified one. After you cover a distance of 15-20 kilometers, maintaining the same speed of 80 km / h, make a stop. Turn off the motor. When you start it again, the tire pressure error will disappear.
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Press the tire pressure monitoring system (TPMS) reset button on your car and you will be able to reset the error.
It does not matter what type of low pressure warning system is used. In any case, there will be a sensor on each wheel of your car. Sometimes it may be necessary to reboot the touch system of the car. Read the owner's manual for the vehicle. It contains information on how to reset a tire pressure error. Most often, the instructions indicate which button to press to reset.
The ignition key must be in the lock. No need to start the car, just turn it to the “on” (“ON”) position. Then press and hold the reset button, which may be under the steering wheel. We are waiting for the low pressure indicator to flash 3 times. After that, you can release the button. We start the car, it should work for 20 minutes. After this time, the computer will calibrate the sensors on the wheels.
Now you can turn off the car.
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Lower and then re-inflate the wheels.
Failed to reset tire pressure error using the previous method? Then we inflate all tires to 0.2 bar, this is the pressure that should be according to the recommendations of car manufacturers. Did the error go away? Then we lower the pressure in the tires completely.
Now we pump up the wheels again. The pressure in them should be the same as indicated on the driver's door pillar or in the car's operating instructions. When there are sensors on the wheels, you need to remember about the spare tire. Now you need to drive about 3-5 kilometers, adhering to a speed of 25 km per hour. So you can reset the tire pressure error.
Remove the battery terminals and then connect it to reset the error.
Each car has a computer that receives data from all kinds of vehicle sensors, including TPMS system sensors. However, any electronics can fail. To reset the error, you will have to reboot the system, for which you need to turn off the power.
Photo: Shutterstock
To do this, open the hood. The battery is located under the hood. Disconnect the negative terminal from it. To perform this operation, use a wrench. Then sit in the driver's seat, turn the key to the "ON" position, but do not start the car. Now you need to press the signal for 3 seconds. This will use up the energy that remains in the electrical system of the machine. Then reconnect the battery. This way you can reset the error.
Sensors keep track of tire pressure. However, you need to be sure that they function properly. Of course, you do not need to constantly walk around with a special measuring device and find out the status of the sensors.
It just needs to be calibrated from time to time.
It is performed quite simply. The most important thing to remember is that, depending on the make and model of your car, for each wheel there are pressure parameters strictly defined by the manufacturer for winter and summer. These values should be given to the sensors. How the installation and configuration will be performed depends on the controller used.
Otherwise, you will have to rearrange them so that everything matches the parameters on the display. For current promotions on the Halva card, which will help you profitably purchase household appliances, you can follow here.
To prevent a tire pressure error from appearing, it is important to calibrate (adjust the TPMS system) every time a change is made. For example, when you installed a new set of wheels, repaired tires, did balancing, and the like. Using TPMS controllers is quite simple. The main thing is to read the instructions for use of the device. And make sure that the tire pressure is the one recommended by the car manufacturer.
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Every car owner gets annoyed if the tire pressure error icon lights up on the dashboard. This indicator informs you that something is wrong with the wheels. However, even if the tire pressure is optimal, the tire pressure error must be reset.
The fact is that if the TPMS system icon constantly signals insufficient pressure, the driver will not be able to know when the rubber will actually begin to deflate. Driving becomes dangerous for both you and other road users. It is necessary to find out the cause of the malfunction as soon as possible and reset the tire pressure error. This is the only way to operate the vehicle safely.
Honda Tire Pressure Monitoring System (TPMS) has its own specifics when programming new sensors, data registration and calibration.
But with basic knowledge, servicing Honda TPMS systems is easy.
Honda's direct TPMS systems with pressure sensors in each wheel are difficult to compare with other vehicles using the same type of TPMS as they require special hardware to connect via the OBD II connector and the procedures are similar. However, there are exceptions, such as Honda Pilot (automatic programming of the system) and vehicles using indirect TPMS systems that use the ABS readings in operation, the difference in wheel speed depending on pressure, i.e. there are no pressure sensors in the system, for example, Honda Civic, Accord, other models after 2012 of release.
Most specialized TPMS service tools can activate the sensors to receive an identification signal from the sensor and their position in the vehicle. The information is then fed through the OBD II connector to the TPMS module. Programming is carried out using a scanner. For Honda's direct TPMS systems, 45 km/h is the magic number. After the vehicle has reached a speed of 45 km/h and has been driven for at least a minute, the system acknowledges the sensor signals, identifies them and captures the pressure information.
Speed is not detected by sensors, speed is determined via CAN bus and TPMS module. Honda engineers believe that at this speed the system is less susceptible to interference from other sensors and radio frequencies.
If a vehicle arrives at the garage with the TPMS warning light on, inflate the tires to the prescribed pressure and drive the vehicle at 45 km/h for one minute. The low system pressure indicator should turn off. 45 km/h - the speed of movement for each procedure of reprogramming the system and registration of data. For indirect type systems, there are other magic numbers - driving at a speed of 65 - 95 km / h for 20 minutes. The initialization process occurs by pressing the TPMS reset button on the instrument panel or steering wheel.
Hondas with direct systems typically have two TPMS lights on the instrument panel. One ISO standard indicator for low tire pressure, another TPMS MIL indicator. In the event of a malfunction in the TPMS system, the module displays the fault code, but goes into safe mode.
The system does not notify the driver of a dangerous low tire pressure. In the event of a malfunction, the TPMS system generates indicator flashes every 30-90 seconds and the flash cycle repeats. A working system signals one signal that lights up for a couple of seconds, then the indicator goes out.
The TPMS fault code is stored in non-volatile memory and cannot be cleared by disconnecting the cable from the battery. To erase the fault code, you must use a scanner. The system memory may contain all the TPMS trouble codes that may occur. But, if the same code occurs twice or more, in most cases the subsequent code is overwritten with the previous one, thus saving each last of the TPMS system fault codes.
When a flat tire is replaced with a spare in a direct type system, the TPMS sets DTCs 32, 34, 36, 38 because the system no longer receives a signal from the flat tire sensor.
Honda TPMS indirect type does not contain wheel pressure sensors.
The system determines the reduction in tire pressure by comparing the relative speed of rotation of the wheels through the ABS wheel sensors. When the tire pressure is reduced, the wheel diameter is slightly reduced. This type of system has been installed on the Honda Accord since 2013. Recalibration must be carried out in the event of a change in tire pressure or adjustment to normal. The process does not require the use of special tools, it is carried out using the TPMS reset button located under the steering wheel or a combination of pressing the information center button, or the button located on the steering wheel.
1. Make sure the vehicle transmission is in neutral or park.
2. Check all wheel dimensions and type.
3. Set the correct tire pressure.
4. Turn on the ignition.
Press and hold the TPMS button located on the lower left of the instrument panel until the TPMS low tire pressure indicator flashes twice.
If the indicator does not flash, press and hold the button again. Recalibration will be completed after running for 20 minutes at 65-95 km/h
1. Using the monitor and steering wheel controls, select Vehicle Settings, press the SEL/RESET button. The calibration process will start.
2. The display will switch to setting mode when you select, cancel or calibrate.
3. Select Calibration, then press the SEL/RESET button. If the process has started, the monitor will display Calibration Started. If the message Calibration Failed to Start appears, repeat steps 2 and 3. Recalibration will be completed after running for 20 minutes at a speed of 65-95 km/h
1. Use the monitor and steering wheel controls, press Menu/MENU and go to Vehicle Menu
2. Select Customized Settings and press the SOURCE button.
3. Select TPMS Calibration, then press the SOURCE button.
