Throttle Position Sensor

Replace the throttle position sensor (TPS) on the M275 6.0L V12 BiTurbo engine to restore proper throttle response and eliminate related fault codes.

Warnings

Tools required

Parts

• Throttle Position Sensor (TPS) × 1 — A 006 153 47 28 or equivalent OEM
• TPS gasket/O-ring (if not included with sensor) × 1 — Use OEM specification

Preparation

1. Allow engine to cool completely for at least 1 hour
2. Perform diagnostic scan to identify which bank (left or right) has the faulty TPS and record fault codes
3. Disconnect negative battery terminal and wait 5 minutes for system capacitors to discharge
4. Remove engine cover by lifting from rear and pulling forward to release front clips
5. Locate the throttle actuator assembly on the identified cylinder bank (mounted on intake plenum)

Procedure

1. 1

   Disconnect electrical connector
   Press the release tab on the TPS electrical connector and carefully pull straight back to disconnect. Do not pull on wires. Inspect connector pins for corrosion or damage.
2. 2

   Clean work area
   Use compressed air or a clean cloth to remove any debris around the throttle actuator housing and TPS mounting location. This prevents contamination from entering the intake system during sensor removal.
3. 3

   Remove TPS mounting screws
   Using the T25 Torx driver, carefully remove the two TPS mounting screws. These screws are torqued to only 3.0 Nm and can strip easily, so apply steady, even pressure while turning counterclockwise. Keep screws in a clean container.
   Torque spec

   TPS Screws3 Nm (2 lb-ft)
4. 4

   Remove throttle position sensor
   Gently wiggle the TPS while pulling straight outward to separate it from the throttle actuator shaft. Do not twist or use excessive force. If stuck, use a small flathead screwdriver to carefully pry at the base, being careful not to damage the throttle body housing.
5. 5

   Inspect and clean mounting surface
   Remove the old gasket or O-ring from the throttle body housing. Clean the mounting surface with electrical contact cleaner and a lint-free cloth. Inspect the throttle shaft for any damage or excessive play. Check the electrical connector port on the throttle body for corrosion.
6. 6

   Install new TPS gasket
   If the new TPS does not come with an integrated gasket, install the new gasket or O-ring onto the throttle body mounting surface. Ensure it is seated properly in the groove without twists or folds.
7. 7

   Install new throttle position sensor
   Align the new TPS with the throttle shaft, ensuring the shaft engages the sensor's internal coupling. The sensor should only fit in one orientation. Push firmly until the sensor seats flush against the mounting surface. Do not force it.
8. 8

   Install and torque TPS screws
   Insert both TPS mounting screws and hand-tighten. Using the torque wrench, tighten the screws in a cross pattern to exactly 3.0 Nm (2.0 lb-ft). These screws are very small and over-torquing will strip the threads.
   ⚠Critical: Do not exceed 3.0 Nm torque specification. Use a low-range torque wrench for accuracy
   Torque spec

   TPS Screws3 Nm (2 lb-ft)
9. 9

   Reconnect electrical connector
   Push the electrical connector firmly onto the new TPS until you hear and feel a positive click. Gently tug on the connector to verify it is fully locked in place.
10. 10

    Reinstall engine cover
    Position the engine cover by engaging the front clips first, then pressing down at the rear until all mounting points are secured.
11. 11

    Reconnect battery and perform adaptation
    Reconnect the negative battery terminal. Use the diagnostic scanner to clear all stored fault codes. Perform throttle actuator adaptation/learning procedure using the scanner's guided function menu. This allows the ECU to learn the new sensor's baseline position.

Reassembly

1. Ensure all electrical connectors are fully seated and locked
2. Verify engine cover is properly secured at all mounting points
3. Double-check that no tools or parts were left in the engine bay

Verification

• Turn ignition to ON position (engine off) and verify no warning lights related to throttle control appear on the instrument cluster
• Start the engine and allow it to idle for 2 minutes, confirming smooth idle quality
• Perform a test drive and verify smooth throttle response throughout the RPM range with no hesitation or stumbling
• Use diagnostic scanner to verify no fault codes are present and that TPS voltage readings change smoothly from approximately 0.5V to 4.5V as throttle opens
• Verify that live data shows proper correlation between accelerator pedal position and TPS position (both should track together proportionally)

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

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