Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2010MOUNTAINEER AWD V6-4.0LREPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTCELLULAR PHONECOMMUNICATIONS CONTROL MODULESERVICE AND REPAIRPROCEDURESAUDIO CONTROL MODULE (ACM) SELF-DIAGNOSTIC MODE
2010 Mercury Mountaineer AWD V6-4.0L
Audio Control Module (ACM) Self-Diagnostic Mode
2010 Mercury Mountaineer AWD V6-4.0LSECTION Audio Control Module (ACM) Self-Diagnostic Mode
Audio Control Module (ACM) Self-Diagnostic Mode
Audio Systems Without Navigation
1. Turn the Audio Control Module (ACM) on.
2. Operate the audio system in radio tuner (AM/FM) mode.
3. Press and hold preset buttons 3 and 6 for 3 seconds until the speaker walk test begins.
- The display indicates each speaker as it is tested.
4. NOTE: If the speaker walk test is the only test required, this procedure can be stopped after Step 3 by turning the ACM off.
Before the speaker walk test is complete, carry out any of the following actions:
5. To exit the self-diagnostic mode, turn the ACM off.
Satellite Digital Audio Receiver System (SDARS) Module Electronic Serial Number (ESN) Retrieval - Vehicles Without Navigation
1. Operate the audio system in satellite radio mode.
2. Press and hold the AUX button and preset button 1, simultaneously.
- The Satellite Digital Audio Receiver System (SDARS) module Electronic Serial Number (ESN) displays on the screen.
3. Record the SDARS module ESN.
4. Turn the audio system off.
Audio Systems With Navigation
1. Turn the Audio Control Module (ACM) on.
2. Operate the audio system in radio tuner (AM/FM) mode.
3. Press and hold preset buttons 3 and 6 for 3 seconds until the speaker walk test begins.
- The display indicates each speaker as it is tested.
4. NOTE: If the speaker walk test is the only test required, this procedure can be stopped after this step, or by allowing the speaker walk test to complete on its own.
Before the speaker walk test is complete, press the "End Test" selection.
5. The following tests are available through the "BEZEL DIAGNOSTICS" menu:
6. To exit the self-diagnostic mode, press the "Exit Diagnostics" selection from the "BEZEL DIAGNOSTICS" menu.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.