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.
2006 Mercury Mariner 4WD V6-3.0L VIN 1FACTORY OEM SERVICE PROCEDURE
Test D: The Doors Do Not Lock/Unlock Using The Remote Keyless Entry (RKE) Transmitter
PINPOINT TEST D: THE DOORS DO NOT LOCK/UNLOCK USING THE REMOTE KEYLESS ENTRY (RKE) TRANSMITTER
Normal Operation
Remote locking and unlocking of the doors is accomplished by the smart junction box (SJB) receiving a command message from the RKE transmitter. The SJB processes the command and provides voltage and ground to the door lock actuators.
All remote transmitters must be present to begin diagnosis of the RKE system.
Aftermarket or dealer-installed systems may adversely affect the RKE system operation. These systems should be disconnected before diagnosing any RKE concerns.
Possible Causes
- RKE transmitter battery
- RKE transmitter programming
- RKE transmitter
- aftermarket systems
- high power devices
- TV/radio transmission towers
- SJB
D1-D5:
D5-D9:
D10:
Normal Operation
Remote locking and unlocking of the doors is accomplished by the smart junction box (SJB) receiving a command message from the RKE transmitter. The SJB processes the command and provides voltage and ground to the door lock actuators.
All remote transmitters must be present to begin diagnosis of the RKE system.
Aftermarket or dealer-installed systems may adversely affect the RKE system operation. These systems should be disconnected before diagnosing any RKE concerns.
Possible Causes
- RKE transmitter battery
- RKE transmitter programming
- RKE transmitter
- aftermarket systems
- high power devices
- TV/radio transmission towers
- SJB
Factory Service Tools
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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.
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