Headlamp Switch Module
Table of contents
B1130 MERCURY Possible Causes
- Faulty Headlamp Switch Module
- Headlamp Switch Module harness is open or shorted
- Headlamp Switch Module circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B1130 MERCURY?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- B1130:07 Light Switch Module Mechanical Failure
- B1130:83 Light Switch Module Value of Signal Protection Calculation Incorrect
- B1130:87 Light Switch Module Missing message
Cost of diagnosing the B1130 MERCURY code
The cost of diagnosing the B1130 MERCURY code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1130 MERCURY Description
The Body Control Module (BCM) monitors the Headlamp Switch Module. The BCM sets the OBDII code when the Headlamp Switch Module is not to factory specifications.