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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 10 (AUTOMATIC TRANSMISSION - 6F35)DIAGNOSIS AND TESTINGDIAGNOSTIC STRATEGYDIAGNOSTICS
2010 Mercury Mariner Hybrid, AWD
Diagnostic Strategy: Diagnostics
2010 Mercury Mariner Hybrid, AWDSECTION Diagnostics
WARNING: This page is about a different variant/trim than selected.
- Carry out On-Board Diagnostic (OBD) procedures Key ON Engine OFF (KOEO) and Key ON Engine Running (KOER).
- Record all DTCs.
- Repair all non-transaxle codes first.
- Repair all transaxle codes second.
- Erase all continuous codes and attempt to repeat them.
- Repair all continuous codes.
- If only pass codes are obtained, refer to DIAGNOSIS BY SYMPTOM for further information and diagnosis.
Follow the diagnostic sequence to diagnose and repair the concern the first time.
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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.