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 CARSECTION 1098 (HANDLES, LOCKS, LATCHES AND ENTRY SYSTEMS)DIAGNOSTIC TESTSLOCKS, LATCHES AND ENTRY SYSTEMS - MODULE CONTROLLEDSYMPTOM CHART

2010 Mercury Mariner Hybrid, AWD

Symptom Chart

2010 Mercury Mariner Hybrid, AWDSECTION Symptom Chart

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
No communication with the vehicle security module (VSM)	Fuse(s) Wiring, terminals or connectors VSM	REFER to MODULE COMMUNICATIONS NETWORK article.
A single/more than one door lock is inoperative	Wiring, terminals or connectors Door lock actuators Sliding door contact switch VSM	Go to Pinpoint Test A .
All door locks are inoperative	Fuse Wiring, terminals or connectors VSM	Go to Pinpoint Test B .
All door locks are inoperative from one switch	Wiring, terminals or connectors Door lock control switch	Go to Pinpoint Test C .
The door locks operate only one way	Wiring, terminals or connectors Door lock control switch VSM	Go to Pinpoint Test D .
The remote keyless entry (RKE) transmitter is inoperative	RKE transmitter RKE transmitter battery RKE transmitter button pressed a substantial amount of times while outside the range of the vehicle RKE transmitter programming VSM	Go to Pinpoint Test F .
An individual button/feature is inoperative from the remote keyless entry (RKE) transmitter	Wiring, terminals or connectors Door locks Horn system Park lamps Remote keyless entry (RKE) transmitter VSM	Go to Pinpoint Test G .
The remote keyless entry (RKE) transmitter has poor range performance	Aftermarket systems High power devices RKE transmitter RKE transmitter battery TV/radio transmission towers VSM	Go to Pinpoint Test H .
The auto lock does not operate correctly	Wiring, terminals or connectors VSM	Go to Pinpoint Test I .
The memory lock does not operate correctly	Wiring, terminals or connectors VSM	Go to Pinpoint Test J .
The remote keyless entry (RKE) two step door unlocking does not operate correctly	Two step door unlocking is disabled	PROGRAM the two step door unlocking. REFER to Stepped Unlock Programming . TEST the system for normal operation.

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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.