TPMS Sensor

Replace or reprogram the tire pressure monitoring system (TPMS) sensor on a 2007-2013 Mercedes-Benz S65 AMG to restore proper tire pressure monitoring functionality.

Warnings

Tools required

Parts

• TPMS sensor × 1 — A0009050030 or equivalent
• TPMS valve stem (if integrated) × 1 — Use OEM specification
• Valve core × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Place wheel chocks behind wheels that will remain on ground
3. Loosen wheel lug nuts 1/4 turn before lifting vehicle
4. Identify which wheel has the faulty TPMS sensor using diagnostic scan tool or dashboard indicator
5. Ensure tire machine is available or arrange for tire dismounting service

Procedure

1. 1

   Remove wheel from vehicle
   Lift the vehicle at the appropriate jacking point for the affected wheel and secure with jack stands. Remove the wheel lug nuts completely in a star pattern and remove the wheel from the hub.
   Torque spec

   Wheel Lug Nuts140 Nm (103 lb-ft)
2. 2

   Deflate tire completely
   Remove the valve stem cap and press the valve core to fully deflate the tire. For faster deflation, use a valve core removal tool to completely remove the valve core. Ensure tire is at 0 PSI before proceeding.
3. 3

   Break tire bead
   Using a tire machine or bead breaker, carefully break both the outer and inner tire beads from the wheel rim. Work around the circumference to ensure complete bead separation. Keep tools away from the TPMS sensor location (typically near the valve stem).
   ⚠The TPMS sensor is mounted inside the wheel near the valve stem. Avoid striking this area with bead breaker tools.
4. 4

   Remove tire from wheel
   Mount the wheel on the tire machine and use the tire machine arm to lift the tire bead over the rim edge. Rotate the wheel to completely remove the tire from the rim. Set the tire aside with the inner surface accessible.
5. 5

   Remove old TPMS sensor
   Locate the TPMS sensor mounted to the valve stem hole inside the wheel. On this vehicle, the sensor is typically a band-clamp style or nut-secured design. If band-clamp style, cut or release the clamp. If nut-secured, remove the retaining nut from outside the wheel. Carefully extract the sensor and valve stem assembly through the wheel rim.
6. 6

   Install new TPMS sensor
   Insert the new TPMS sensor and valve stem assembly through the valve stem hole from inside the wheel. Ensure the sensor body is oriented correctly according to manufacturer markings. If band-clamp style, install new clamp and tighten securely but do not overtighten. If nut-secured, thread on retaining nut finger-tight, then snug (do not exceed manufacturer torque specification, typically 5-8 Nm).
7. 7

   Reinstall tire on wheel
   Apply tire mounting lubricant to both tire beads. Position tire onto wheel rim and use tire machine to work the first bead over the rim edge, then the second bead. Ensure the tire is properly seated in the rim drop center. Keep the tire machine arm away from the TPMS sensor during mounting.
8. 8

   Inflate and seat tire beads
   Install the valve core and inflate the tire to approximately 40 PSI to seat both beads against the rim flanges. Listen and watch for both beads to 'pop' into place. Once beads are seated, adjust pressure to the specification on the driver's door jamb label (typically 30-36 PSI for this vehicle).
9. 9

   Balance wheel assembly
   Mount the wheel on a balancing machine and check for proper balance. Add wheel weights as necessary to achieve proper balance. This step is critical for smooth operation and tire longevity.
10. 10

    Reinstall wheel on vehicle
    Lift the wheel onto the hub and hand-thread all lug nuts. Lower the vehicle so the tire contacts the ground but is not bearing full weight. Torque the lug nuts to specification in a star pattern. Lower vehicle completely and perform final torque check in star pattern.
    Torque spec

    Wheel Lug Nuts140 Nm (103 lb-ft)
11. 11

    Program TPMS sensor to vehicle
    Connect Mercedes STAR diagnostic system or compatible TPMS programming tool to the vehicle's OBD-II port. Navigate to TPMS programming function and follow prompts to teach the new sensor ID to the vehicle. This typically involves entering the sensor ID manually or using the tool's automatic learn function. Drive the vehicle for 10-15 minutes at speeds above 20 mph to complete initialization.
    ℹ️Without proper programming, the new TPMS sensor will not communicate with the vehicle and the TPMS warning light will remain illuminated.

Reassembly

1. Verify all wheel lug nuts are torqued to specification in star pattern
2. Reinstall valve stem cap on affected wheel
3. Check tire pressure on all four wheels and adjust to door jamb specification

Verification

• Start the vehicle and verify the TPMS warning light extinguishes after a few seconds
• Use diagnostic scan tool to verify all four TPMS sensors are reporting pressure values
• Test drive vehicle at speeds above 20 mph for 10-15 minutes to ensure TPMS system fully initializes
• Verify tire pressure reading on instrument cluster matches actual tire pressure
• Perform visual inspection of wheel for proper seating and any signs of air leakage around valve stem

More procedures for this vehicle