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.
Driver's Door Module
The driver's door module, (3/126) transmits information via the Controller area network (CAN) to the central electronic module if the lock is locked or unlocked in the driver's door and if the door has been unlocked using a key.
Signal cables are directly connected to the driver's door module from:
- Switch in the lock units in the driver's doors (3/74), locked / unlocked
- Switch in the lock units in the driver's doors (3/74), locking / neutral position / unlocking. The signal comes from the door lock and indicates the position of the door key in the lock.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.