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14.3b Heated Seats (HS)   >   11 Diagnosis - Function Test

Test step/Test scope Test condition Nominal value Possible cause/Remedy 1) 1.0 Seat heating stage I Ignition: ON Press front of left rear seat heater switch (S51/3) or right rear seat heater switch (S51/4). 1 LED in switch will iluminate. Seat cushion and backrest cushion will warm up. 23 1.0, 3.0, 4.0, 8.0, 9.0 2.0 Seat heating stage II Ignition: ON Press rear of left rear seat heater switch (S51/3) or right rear seat heater switch (S51/4). 2 LED'S in switch will illuminate. Seat cushion and backrest cushion will warm up noticeably more than stage I. 23 1.0, 3.0, 4.0, 8.0, 9.0 3.0 Dimming of indicator lamps in stages I or II Ignition: ON Seat heaters switched on. Parking lamps switched on. LED'S for stage I or II light up brightly. LED'S become dimmer. 23 2.0, 5.0, 6.0, 7.0, 10.0 - 12.0 1) Observe Preparation for Test, see 22.