Warning lights and messages on your dashboard shouldn’t be ignored. They illuminate and appear to warn you about a possible malfunction in your vehicle that could be dangerous for your car or its passengers; if ignored. In the recent years, one warning that was added to the dashboards of many vehicles is the tire pressure monitor system and almost every vehicle now boasts TPMS as standard equipment. It is very easy to get TPMS installed directly or indirectly in any good mechanical workshop; if not supplied at a factory level for your model. Based upon pressure sensors, tire pressure monitor system is an electronic system works to control and gauge the pressure in each tyre of the vehicle and transmits the information to the driver.
Tire pressure monitor system explained
When the air pressure drops below the recommended level of manufacturer, Tyre Pressure Monitor system (TPMS) triggers a warning message asking you to check all the tires for the required level of pressure. Typically, the driver should receive this message when the pressure is 25% below the manufacturer’s recommended level. Once you receive this alert, check the pressure in all tires with the help of a pressure gauge and should the pressure is found correct in all tires, TPMS message needs to be cleared.
But if you notice the light is still illuminating or the message is still appearing then you must perform a careful insight into the other possible causes. It is possible that the TPMS system’s sensor has failed or might be something went wrong with the control unit box which is responsible for controlling whole system in the car.
Why TPM system is necessary?
TPM system is a great addition in cars to enhance the safety levels and to take immediate action in case of under-inflated tire situations. It helps to keep your tire pressure well adjusted which is integral to allow correct braking distances and lateral stability. Also, it offers economic benefits by providing better fuel economy and comfort. Correct tyre pressure ensures less tire wear saving your bucks on maintenance. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. So it’s really important to have such a system installed in your vehicle that can monitor and alert the driver for the correct tire pressure level and equally worthwhile to keep checking if the TPM system is working fine. At times, it may go faulty.
What are the possible causes of TPMS MALFUNCTION?
From mechanical to manual, there are some common reasons for receiving TPMS failure message. These could be drained or defective TPMS sensors which have been run out of their 10 years long good life so you can check the tires for their TPMS sensors and replacing them one by one to identify and fix the faulty one. It’s quite rare that all 4 sensors go faulty at the same time so you will have to analyze them each of them individually. Or sometimes, there could be a problem in the signal transmission by TPMS sensors to control unit. Integrated antenna which receives signals may be failed to create a communication break.
As an another cause, it is good to check control unit for TPMS fuse which can burn out in case of any short circuit in control unit or corrosive electrical components in the module may hamper the performance.
In some instances, weather changes can also affect the sensors of your car since they are located outside the car and any change in temperature may trigger this warning message.
But the most common reason is observed when your car comes back to home after a tire replacement service from garage. It means that when the tires of your car changed, sensors are either damaged in transit or not transferred to the new rims at all. This results in car not being able to find or recognize TPM sensors. Always check the TPMS malfunction message after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly. Many shops nowadays have wireless readers and detectors that can verify if the sensors are installed and working properly so you can take your car back to the garage to fix this warning issue.
How to Fix TPM system?
You might need to reset TPM sensor to ensure the TPM system is activated and working fine. Procedure of making your car relearn about the sensors is very quick and easy. No special tools are required to perform this relearn procedure.
- Inflate all tires to pressure listed on the placard.
- Drive the vehicle for at least 10 minutes while maintaining a speed of 30 MPH, or more. All sensor IDs will be memorized automatically and resets the sensors for the next time you turn on the car.
Alternatively, you could also go about resetting as:
Start with the vehicle off, and then turn the key to the “On” position without starting the engine. Locate the tire pressure monitor reset button beneath the steering wheel. Hold the TPMS reset button until the tire pressure light blinks 3 times, then release.
Inflate all tires to 3 PSI over the recommended amount, then deflate them completely. Once they’re all deflated, re-inflate to the recommended tire pressure. If you are using a spare tire, it may have a sensor as well so be sure to do the same with that one.
If the TPM system warning for any wheel does not clear, even after ensuring correct inflation and driving for more than 10 minutes then, you should seek qualified assistance as soon as possible. We recommend that always have your tires changed or replaced with a qualified technician such as xenons4u to avoid any post-service issues.
The main supplier for tyre monitoring sensors is continental.
Jaguar cars fitted with tyre monitoring valve sensors:
- Jaguar XF X250
- Jaguar X260
- Jaguar XE XKR F-Type
- Jaguar XJ351
- Jaguar Epace
Jaguar Land Rover part numbers:
Part numbers available to buy at our shop:
- FW931A159AB S180052028C
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