2009 Mercedes-Benz S600 Tire Pressure Warning Light Stays On

Resolve Tire Pressure Warning Light in 2009 Mercedes-Benz S600

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Tire Leaking Air
0%
30% chance it's the
Wheel Leaking Air
0%
15% chance it's the
Tire Pressure Monitoring System
0%
15% chance it's
Something else
The most common reasons a 2009 Mercedes-Benz S600 tire pressure warning light stays on are a leaking tire, a wheel that no longer holds air, or a faulty tire pressure monitoring system.
  • Tire Leaking Air: A puncture, valve stem issue, or rim damage can cause a tire to leak air, leading to loss of pressure.
  • Wheel Leaking Air: A puncture or damage to the tire or rim can cause air to leak, resulting in a loss of tire pressure.
  • Tire Pressure Monitoring System: A malfunctioning tire pressure monitoring system can be caused by faulty sensors or a dead battery in the sensor units.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2009 Mercedes-Benz S600 tire pressure warning light stays on?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When a tire pressure monitoring sensor fails, the tire pressure monitoring system control module will recognize a loss in communication and turn on the warning lamp which indicates the failure. This is most often the case. However, the tire pressure monitoring sensor may also fail by reporting incorrect tire pressures. This could cause a flat tire to go unrecognized, or a properly inflated tire to signal a low or high tire pressure warning.

When a relearn is needed, for any reason, the TPMS warning light will illuminate, and many vehicles will display a message relating to the TPMS system being inoperative or loosing communication. It is important to keep a watchful eye on tire pressures when this system is having issues because there is no warning available for underinflation or overinflation of the tires.

Wheels offer very few symptoms, but these symptoms should never be ignored. Visible cracks on the wheels may appear, especially after hitting a large bump, Most often, this will also be accompanied by loss of air from the tire on that wheel. Also, vibration in the steering wheel is very common when the tire is out of balance, and improper wheel nuts or bolts can cause creaking and popping noises to develop. Again, there are very few symptoms, but they should not be ignored.

The only symptoms of a TPMS control module failure are failing to alert the driver of underinflation or overinflation of one or more tires, failure to communicate with the body control module or TPMS sensors, or erroneously reporting incorrect tire pressure.

The only symptoms requiring diagnosis for the tire pressure monitoring system warning lamp is if the warning lamp has illuminated while the tires have correct air pressure, or if the air pressure for the tires is out of specification and the warning lamp is off. This is because the overwhelming majority of cases where the TPMS lamp illuminates is due to the change in ambient temperature.

What steps should I take to diagnose the tire pressure warning light issue on my 2009 Mercedes-Benz S600?

To effectively diagnose the tire pressure warning light issue on your 2009 Mercedes-Benz S600, begin with a thorough assessment of the tire pressure in all four tires. Utilize a reliable tire pressure gauge to ensure that each tire is inflated to the manufacturer's recommended levels, which can typically be found on a sticker located inside the driver's door jamb or within the owner's manual. Following this, conduct a visual inspection of each tire for any signs of damage, such as punctures, cuts, or bulges, as these can lead to pressure loss and trigger the warning light. Additionally, check for leaks by examining the tires and valve stems; a simple mixture of soap and water can help identify leaks, as bubbles will form where air is escaping. If you have corrected any pressure issues, it may be necessary to reset the tire pressure monitoring system (TPMS) to clear the warning light, so consult your owner's manual for specific reset instructions. However, if the warning light remains illuminated after these steps, it is advisable to seek assistance from a qualified mechanic or a Mercedes-Benz dealership for further diagnosis and repair. By following this structured approach, you can efficiently address the tire pressure warning light issue and ensure the safety and performance of your vehicle.

What could cause the tire pressure warning light to stay on in a 2009 Mercedes-Benz S600?

When the tire pressure warning light remains illuminated in a 2009 Mercedes-Benz S600, it often indicates underlying issues that require attention. One of the most frequent culprits is incorrect tire pressure; both over-inflation and under-inflation can trigger the warning system, making it essential to regularly check and maintain the recommended tire pressure. If the tires are properly inflated yet the light persists, it may be necessary to reset the tire pressure monitoring system (TPMS), as it can sometimes fail to recognize the correct pressure. Additionally, defective tire pressure sensors or corroded wiring connections can lead to a malfunctioning system, causing the warning light to stay on. Mechanical issues, such as worn suspension components or a malfunctioning steering angle sensor, may also contribute to this problem. In cases where the TPMS light flashes after attempting a reset, it could indicate that the tire pressure sensors need replacement, as they rely on small batteries that can eventually deplete. Addressing these issues promptly is crucial for maintaining the safety and performance of your vehicle.

What immediate steps should be taken to address the tire pressure warning light that remains on in a 2009 Mercedes-Benz S600?

When the tire pressure warning light remains illuminated in your 2009 Mercedes-Benz S600, it is crucial to act promptly to avoid potential safety hazards and costly repairs. Ignoring this warning can lead to uneven tire wear, reduced fuel efficiency, and compromised handling, which may increase the risk of accidents. Start by checking the tire pressure in all tires, including the spare, ensuring they meet the manufacturer's specifications. If you find any discrepancies, adjust the pressure using a reliable gauge and air compressor. Next, inspect each tire for visible damage such as punctures or bulges, as these can lead to blowouts if left unaddressed. After making necessary adjustments, reset the Tire Pressure Monitoring System (TPMS) to clear the warning light. If the light persists, it may indicate a malfunction within the TPMS itself, necessitating professional diagnosis. Taking these steps not only enhances your vehicle's performance but also ensures your safety on the road, making it imperative to address the issue without delay.

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