B1352 Key-in-ignition circuit fault
B1352 means: Key-in-ignition circuit fault. The body electronics (lights, doors, climate, windows, keys) found a fault. OK to drive, but have it checked soon. The repair usually costs about €40–500 in Estonia. The most common cause: low battery voltage. Other possible causes: wire or connector (often in the door hinge loom), faulty switch, motor or sensor.
What it means
The body electronics (lights, doors, climate, windows, keys) found a fault. It usually doesn't affect the engine.
This is a make-specific code (Ford). The exact meaning can vary by model and year.
What you may notice
- A comfort function doesn't work
- Warning on the dashboard
What could be wrong
- 1Low battery voltage
- 2Wire or connector (often in the door hinge loom)
- 3Faulty switch, motor or sensor
- 4Module software or the module itself
Repair difficulty: Moderate
What you can check yourself
Check the battery and the fuse. If the fault appeared after a battery change, relearning the function may help. You can check the simple things yourself, but the repair is best done in a workshop.
How we fix it
- We read the module codes and data
- We check the supply and wiring
- We relearn the function or replace the switch or module
Standard SAE description: Ignition Key-In Circuit Failure