maintenance

TPMS Relearn

for 2012 Mercedes-Benz S65 AMG 6.0L V12 BiTurbo M275 · RWD

Difficulty

Easy

Time

24 min

Tools

Steps

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Reset and relearn the Tire Pressure Monitoring System (TPMS) sensors on a 2007-2013 Mercedes-Benz S65 AMG to restore proper tire pressure monitoring functionality after tire rotation, sensor replacement, or wheel service.

Warnings

ℹ️TPMS sensors must be installed and functional before performing relearn procedure. Replace any damaged or missing sensors first.

⚠Incorrect tire pressures during relearn will result in inaccurate TPMS warnings. Verify correct pressures before beginning procedure.

Tools required

Mercedes-Benz STAR diagnostic tool or compatible scan toolEssential

Tire pressure gaugeEssential

Tire inflator/compressor

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Preparation

Locate vehicle placard on driver's door jamb showing correct tire pressures for front and rear axles
Ensure all four tires are cold (vehicle not driven for at least 3 hours)
Verify all TPMS sensors are installed and valve stems are not damaged
Have ignition key available

Procedure

1
Verify and adjust tire pressures
Using a calibrated tire pressure gauge, check all four tire pressures. For the S65 AMG, typical pressures are 36 PSI front and 41 PSI rear for standard driving, but verify against the door placard for your specific wheel/tire combination. Adjust all tires to the exact specified pressures. Do not exceed maximum pressures listed on tire sidewall.
2
Check spare tire if equipped
If vehicle is equipped with a spare tire containing a TPMS sensor, verify its pressure matches the specification on the door placard (typically 60 PSI for compact spare). The system monitors all five sensors on vehicles so equipped.
3
Turn ignition to position 2
Insert key and turn ignition to position 2 (all dashboard lights illuminated, engine not running). Do not start the engine. Wait for all instrument cluster displays to fully initialize, approximately 5-10 seconds.
4
Access TPMS menu via instrument cluster
Using the multifunction steering wheel buttons, navigate to the Service menu on the instrument cluster. Press the left arrow button repeatedly to scroll through menus until 'Tire Pressure' or 'Tire Pressure Monitor' appears. The exact menu name varies by model year and COMAND system version.
5
Initiate manual TPMS reset
Once in the Tire Pressure menu, press and hold the 'OK' or center button on the steering wheel for approximately 5 seconds until a message appears stating 'Tire pressure monitor restarted' or 'Use current pressures as reference.' The TPMS warning light may flash briefly. Release the button when confirmation message appears.
6
Confirm reset via COMAND system (if basic reset fails)
If instrument cluster method does not work or option is unavailable, access the COMAND system. Navigate to: Vehicle > Service > Tire Pressure > Restart. Confirm the restart when prompted. This method is available on 2010+ model years with updated COMAND systems.
7
Perform diagnostic tool relearn if manual methods fail
Connect Mercedes-Benz STAR diagnostic tool or compatible aftermarket scan tool to OBD-II port beneath driver's side dashboard. Turn ignition to position 2. Navigate to: Control Units > Tire Pressure Monitor > Adaptations > Learn Tire Pressure Sensors. Follow on-screen prompts to complete automatic sensor ID learning. Tool will communicate with each sensor and store new IDs in TPMS control module.
ℹ️Diagnostic tool method is required after sensor replacement or when sensors from another vehicle are installed. Basic reset methods will not learn new sensor IDs.
8
Complete relearn drive cycle
Turn off ignition and start the engine. Drive the vehicle at speeds above 20 mph for at least 10 minutes, making several turns in both directions. This allows the system to verify sensor positions and complete the relearn process. The TPMS warning light should extinguish within this drive cycle.
9
Verify system operation
After drive cycle, park vehicle and check instrument cluster for TPMS warning light status. Access the Tire Pressure display menu to verify all four (or five) tire pressures are displayed with current readings. Each tire should show individual pressure values, not dashes or 'not available' messages.

Reassembly

No reassembly required for this procedure

Verification

TPMS warning light is extinguished on instrument cluster
Individual tire pressures display correctly in instrument cluster and COMAND system
Deliberately reduce pressure in one tire by 5-8 PSI and verify system triggers warning within 2-3 minutes of driving
Re-inflate test tire to correct pressure and verify warning clears after brief drive

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