Heated Seats, Checking

Heated Seats, Checking

NOTE:
- If there is a condition at which heater of driver or passenger seat cannot be switched on (short circuit in connection to seat heating element, open circuit in voltage supply to front Climatronic Control Module J255), this is stored as a malfunction in Climatronic Control Module J255. Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
- Checking actuation of heated seat operation is described in guided fault-finding for air conditioner. Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
- If there is a condition at which heater of rear seats cannot be switched on (short circuit in connection to seat heating element, open circuit in voltage supply to Rear A/C Control Head (Climatronic) E265), this is stored as a malfunction in Rear A/C Control Head (Climatronic) E265. Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
- If voltage measured at Energy Management Control Module J644 at terminal "30" falls below a value stored in Energy Management Control Module J644, performance level of seat heater is reduced (currently to approx. 50%) or switched off completely and load on generator is relieved (duty cycle of activation of 100% reduced to 90 to 0 % by electronics of Climatronic Control Module J255 / Rear A/C Control Head (Climatronic) E265). Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
- Measured value block of Climatronic Control Module J255 indicates that front seat heating is switched on, or why no activation is occurring despite a request (display group "027", "028", "033", "034" and "035") Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.
- Measuring value block of Rear A/C Control Head (Climatronic) E265 indicates that heater for rear seats is switched on, or why no activation is occurring despite a request (display group "004", "005", "007" and "008"). Climatronic Control Module J255 indicates that rear seat heater has been switched off e.g. due to excessive load on vehicle electrical system (display group "049") Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding" function.