DTC P0040 Mercedes-Benz
Drivers Heated Seat Relay Drive Circuit Open or Shorted to Ground
Drivers Heated Seat Relay Drive Circuit Open or Shorted to Ground
Description
If the passenger heated seat relay drive circuit is shorted to voltage and the HVAC module attempts to activate the passenger heated seat relay, the DTC will set and the seat will fail to heat or intermittently heat.
Cause and Solution
Wiring, terminals or connectors Heated seat relay Heated seat element HVAC module
Video Guide
Diagnostic Info
- DTC Code: P0040
- Brand: Mercedes-Benz