B3808

Rear Door Lock Relay Circuit

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$33–111 (est.)

Symptoms

Rear door won't lock or unlock
Rear door locks/unlocks with delay
Hazard warning light flashes when attempting to lock

Causes

Open or short circuit in wiring harness
Lock relay malfunction
Damage to the lock itself
Poor contact in connectors
Contact corrosion

How to Fix

Check wiring harness for open or short circuit
Check the lock relay for functionality
Inspect connectors and contacts for corrosion
Replace a faulty relay or lock
Clean contacts from corrosion

Related codes

B3807 B3809 B3810