Heated Seats, Checking

Heated Seats, Checking

• A condition exists, which does not allow the driver or passenger seat heating to switch on. Short circuit in the seat heating element connector, open circuit in the voltage supply to the Climatronic control module (J255) etc. If this is stored as a fault in the Climatronic control module, refer to Vehicle diagnosis, testing and information system (VAS5051B) under "Guided Fault Finding".

• The function test for the heated seat activation is described in A/C system Guided Fault Finding using (VAS5051B) in the "Guided Fault Finding function.

• If the voltage measured on terminal 30 falls below the value stored in the vehicle electrical system control module (J519) , then the heat seating power will be reduced to approximately 50%, or it will be switched off completely to take the load off the generator. The Climatronic control module reduces the duty cycle from 100% to less than 90 to 0%. Check using (VAS5051B) under "Guided Fault Finding".

• Climatronic control module measured value block indicates the front seat heater is switched on or why no activation is occurring despite a request. Check using (VAS5051B) in "Guided Fault Finding" function.