electrical
Side Mirror Assembly
for 2012 Mercedes-Benz S65 AMG 6.0L V12 BiTurbo M275 · RWD
Difficulty
Moderate
Time
1.1 h
Tools
7
Steps
13
✓Fact-checked. Built from OLP's spec database, then independently fact-checked line by line with every correction applied. Master-tech sign-off by Chris Hackleman is queued. Cross-check torque values against the factory manual, and stop if anything looks unsafe. How our data is made.
Complete replacement of the exterior side mirror assembly on the 2007-2013 Mercedes-Benz S65 AMG, including removal of door trim panel, disconnection of electrical connectors, and installation of new mirror unit.
Warnings
⚠Disconnecting battery will reset radio presets, seat memory, and window calibrations. Note settings before beginning work.
⚠The mirror assembly is heavy and contains glass. Support the mirror from outside when removing mounting bolts to prevent dropping.
ℹ️This vehicle may have auto-dimming, power fold, memory position, and lane keep assist features. Ensure replacement mirror has identical features and correct connector configuration.
Tools required
Torx driver set (T20, T25, T30)Essential
Trim panel removal toolsEssential
10mm socket and ratchetEssential
Torque wrench (5-50 Nm range)Essential
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Parts
- Side mirror assembly (left or right) × 1 — Use OEM specification - verify heated/memory/power fold options
- Door trim panel clips (assorted) × 5 — Keep replacement clips on hand
- Mirror gasket/seal × 1 — Usually included with mirror assembly
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Preparation
- Park vehicle on level surface and engage parking brake
- Turn ignition off and remove key
- Disconnect negative battery terminal and wait 5 minutes for system capacitor discharge
- Protect door paint around mirror base with masking tape
- If working on driver side, move steering wheel to full down position for access
Procedure
- 1Remove door trim panel lower sectionRemove the T25 Torx screw behind the door pull handle. Use trim removal tools to carefully release the lower door trim panel clips starting from the bottom rear corner. Work forward to release all clips. The panel does not need to be fully removed, just lowered enough to access the mirror wiring.
- 2Access mirror wiring harnessLocate the mirror wiring harness near the front upper corner of the door cavity. The harness runs from the door jamb area upward to the mirror base. Carefully pull back any foam insulation or protective covering to expose the main connector.
- 3Disconnect mirror electrical connectorsPress the locking tab on the main mirror connector and disconnect. On models with power fold, there will be a secondary smaller connector for the fold motor - disconnect this as well. Note the routing of the wiring harness for reinstallation. If connectors are corroded, clean with electrical contact cleaner.⚠Do not force connectors. The locking tabs are fragile and break easily. Press tab fully before pulling connector apart.
- 4Remove interior mirror trim coverFrom inside the vehicle, locate the triangular trim cover at the door-mirror junction in the upper front corner of the door panel. Carefully pry this cover away using a trim tool, starting from the rear edge. It is held by clips only. Set aside with clips intact for reuse.
- 5Support mirror assembly from exteriorHave an assistant support the mirror housing from the outside of the vehicle, or use padded tape to temporarily secure it. The mirror will be loose once the mounting bolts are removed and must not be allowed to fall.
- 6Remove mirror mounting boltsUsing a 10mm socket, remove the three mirror mounting bolts visible through the opening where the triangular trim was removed. These bolts secure the mirror base to the door frame. Keep track of any spacing washers or shims that may be present behind the mirror base, as these ensure proper fit.⚠Support the mirror assembly while removing the final bolt to prevent it from falling and damaging the door paint or breaking the glass.Torque specModule Mounting Bolts8 Nm (6 lb-ft)
- 7Remove old mirror assemblyWith all bolts removed, carefully guide the wiring harness through the door opening as you pull the mirror assembly away from the door. Remove the rubber gasket/seal from either the old mirror base or the door mounting surface. Inspect for damage.
- 8Prepare new mirror assemblyUnpack new mirror assembly and verify it matches the old unit in connector configuration and features. Install the rubber gasket/seal onto the new mirror base if not pre-installed. Ensure gasket is properly seated in its groove all the way around to prevent water intrusion.
- 9Install new mirror assemblyFeed the wiring harness from the new mirror through the door opening into the door cavity. Align the mirror base with the three mounting holes on the door frame. Have assistant support mirror from outside while you verify alignment and thread the first bolt by hand. Install remaining two bolts finger-tight before final torquing.
- 10Torque mirror mounting boltsUsing a torque wrench, tighten the three mirror mounting bolts to specification in a crossing pattern (top, bottom-opposite, then middle). Verify mirror base sits flush against door frame with gasket compressed evenly all around.Torque specModule Mounting Bolts8 Nm (6 lb-ft)
- 11Connect mirror electrical connectorsRoute wiring harness along original path and reconnect the main mirror connector, ensuring the locking tab clicks into place. Connect the secondary power fold connector if equipped. Gently tug on connectors to verify they are fully seated and locked.
- 12Reinstall trim componentsReplace the triangular interior trim cover by aligning clips and pressing firmly until all clips seat. Reposition door trim panel and secure all clips by pressing firmly along the perimeter. Install and torque the T25 screw behind door pull handle.
- 13Reconnect battery and initialize systemsReconnect negative battery terminal. Turn ignition to position II (do not start engine). Test all mirror functions: power adjustment in all directions, heating element if equipped, power fold if equipped, and auto-dimming if equipped. Check memory recall functions from seat memory buttons.Torque specBattery Terminal Bolts6 Nm (4 lb-ft)
Reassembly
- Ensure all door trim clips are fully seated to prevent wind noise
- Verify mirror gasket is properly compressed with no gaps visible around base
- Test mirror fold function through several cycles if equipped to ensure proper operation
- Recalibrate window one-touch auto up/down by holding window switch in up position for 3 seconds after full close, then down position for 3 seconds after full open
Verification
- Test all mirror adjustment directions (up, down, left, right) from driver seat controls
- Verify heated mirror function activates with rear defrost button
- Test power fold function if equipped by pressing fold button - mirror should fully retract and extend smoothly
- Check that memory mirror positions recall correctly with seat memory buttons 1, 2, and 3
- Inspect mirror base from outside for even gasket compression and flush mounting
- Verify no water leaks into door cavity after car wash or rain exposure
- Confirm no wind noise from door trim panel area at highway speeds
Related trouble codes on this vehicle
Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.
B0220Driver Power Mirror Motor CircuitB0221Passenger Power Mirror Motor CircuitU0204Lost Communication with Mirror Control ModuleU0237Lost Communication With EC/Auto Dimming Mirror
Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →