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 MANUALSMITSUBISHI2012LANCER AWD L4-2.4L (4B12)REPAIR AND DIAGNOSISBODY AND FRAMELOCKSKEYLESS ENTRYKEYLESS ENTRY TRANSMITTERSERVICE AND REPAIRWIRELESS CONTROL MODULE (WCM)
2012 Mitsubishi Lancer AWD L4-2.4L (4B12)
Wireless Control Module (WCM)
2012 Mitsubishi Lancer AWD L4-2.4L (4B12)SECTION Wireless Control Module (WCM)
DISASSEMBLY AND ASSEMBLY
WARNING:
Coin-type lithium battery may contain perchlorate materials. Special handling may apply. For additional information, see www.dtsc.ca.gov/hazardouswaste/perchlorate.
DISASSEMBLY SERVICE POINTS
[[A]] UPPER COVER REMOVAL
CAUTION:
To prevent damage to the transmitter, wrap a flat-tipped screwdriver with protective tape before prying.
Insert a flat-tipped screwdriver in the area shown, and remove the upper cover by prying it with the screwdriver.
[[B]] BATTERY REMOVAL
CAUTION:
- Do not allow water or dust to enter the inside of the transmitter assembly when it is open. Also, do not touch the precision electronic device.
- To prevent damage to the transmitter assembly, wrap a flat-tipped screwdriver with protective tape before prying.
Insert a flat-tipped screwdriver in the area shown, and remove the battery by prying it with the screwdriver.
ASSEMBLY SERVICE POINT
]]A[[ BATTERY INSTALLATION
CAUTION:
Do not allow water or dust to enter the inside of the transmitter assembly when it is open. Also, do not touch the precision electronic device.
Install a new battery to the transmitter assembly with its (+) side facing towards the master key side.
Battery required for replacement: Coin type battery CR1620
RENDER: 1.0x
NO RELATED
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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.