The Mercedes G-Class, commonly known as the G Wagon, is a luxury SUV that combines rugged performance with high-end features. One crucial aspect of maintaining this vehicle’s performance and safety is ensuring the tire pressure is at the recommended levels. Proper tire pressure not only enhances fuel efficiency but also improves handling and prolongs tire life.

Understanding the specific tire pressure requirements for different trims and engines of the G Wagon is essential for any owner. Each model may have varying specifications based on its design and intended use. Below is a comprehensive guide to the recommended tire pressures for various Mercedes G Wagon trims and engines.

Mercedes G Wagon Tire Pressure

Tire Pressure Table for Different Trim/Engine

Trim/Engine Front Tire Pressure (PSI) Front Tire Pressure (BAR) Rear Tire Pressure (PSI) Rear Tire Pressure (BAR)
G 550 30 2.1 30 2.1
G 63 AMG 32 2.2 32 2.2
G 65 AMG 30 2.1 30 2.1
G 350d 30 2.1 30 2.1
G 400d 30 2.1 30 2.1

Resetting Tire Pressure Sensor for Mercedes G Wagon

The tire pressure monitoring system (TPMS) in the Mercedes G Wagon is designed to alert you when tire pressures are not within the recommended range. If the TPMS light is flashing, it indicates a problem that requires attention. Resetting the tire pressure sensor is a straightforward process, but it’s essential to ensure that the tire pressures are correct before proceeding.

To reset the tire pressure sensor, follow these steps:

Steps to Reset Tire Pressure Sensor

  1. Check the Tire Pressure: Ensure all tires are inflated to the recommended PSI, as outlined in the previous section.
  2. Turn on the Ignition: Insert the key fob into the ignition and turn it to the “On” position without starting the engine.
  3. Locate the TPMS Reset Button: The button is typically found beneath the steering wheel or in the glove compartment.
  4. Press and Hold the Reset Button: Hold the button until the TPMS light blinks three times, then release it.
  5. Start the Engine: Turn the ignition to the “Off” position, then start the engine to ensure the light is off.

Troubleshooting TPMS Light Issues

If the TPMS light continues to flash after resetting, there may be underlying issues. Here are common reasons for persistent TPMS light activation:

Issue Description
Low Tire Pressure One or more tires may still be under-inflated.
Faulty Sensor A tire pressure sensor may be malfunctioning or damaged.
Battery Issues The battery in the tire pressure sensor may need replacement.
Incorrect Tire Size Using tires not compatible with the TPMS can cause issues.

Additional Tips


  • Regularly check tire pressures, especially before long trips.

  • Replace the TPMS sensors every 5-7 years to ensure proper functionality.

  • Consult the vehicle’s manual for specific instructions related to your G Wagon model.

Maintaining Proper Tire Pressure

Proper tire pressure is crucial for the overall performance, safety, and longevity of your Mercedes G Wagon. Maintaining the correct tire pressure ensures optimal handling, fuel efficiency, and tire wear. Under-inflated tires can lead to poor traction, increased stopping distances, and a higher risk of tire blowouts. Conversely, over-inflated tires can cause a harsh ride and uneven tire wear. Regularly monitoring and adjusting tire pressure is an essential maintenance task that every G Wagon owner should prioritize.

How to Check Tire Pressure

Checking tire pressure is a simple process that can be done at home or at a service station. Follow these steps for an accurate reading:

  1. Gather Your Tools: You’ll need a reliable tire pressure gauge, which can be digital or analog.
  2. Ensure Cold Tires: Check tire pressure when the tires are cold, ideally after the vehicle has been parked for at least three hours.
  3. Remove Valve Caps: Unscrew the valve caps on each tire to access the valve stems.
  4. Press the Gauge: Firmly press the gauge onto the valve stem to get a reading. Make sure there is no hissing sound, indicating air is escaping.
  5. Read the Pressure: Note the PSI reading on the gauge and compare it to the recommended pressure listed in your owner’s manual or on the driver’s door jamb.
  6. Adjust as Necessary: If the pressure is too low, add air until it reaches the recommended level. If it’s too high, release some air until it’s correct.
  7. Replace Valve Caps: After checking and adjusting, securely replace the valve caps to prevent dirt and moisture from entering.

Useful Tips for Tire Pressure Maintenance

To ensure optimal performance and safety, consider the following tips:


  • Check Tire Pressure Monthly: Regular checks help catch issues early before they become serious problems.

  • Inspect Tires for Damage: Look for signs of wear, cracks, or bulges that could affect tire performance.

  • Rotate Tires Regularly: Follow the manufacturer’s recommendations for tire rotation to promote even wear.

  • Monitor Seasonal Changes: Tire pressure can change with temperature fluctuations. Check pressure more frequently during extreme weather.

  • Use Quality Equipment: Invest in a good tire pressure gauge to ensure accurate readings.

  • Don’t Forget the Spare: Regularly check the spare tire’s pressure, as it’s often overlooked but crucial for emergencies.

By maintaining proper tire pressure, you can enhance the driving experience of your Mercedes G Wagon while ensuring safety and efficiency on the road. Regular checks and adjustments are simple but vital tasks that every owner should embrace.

Categories: Mercedes-Benz

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