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14.3b Heated Seats (HS)   >   14 Diagnosis - Complaint Related Diagnostic Chart

Survey of Recallable Test Functions Complaint/Problem Possible cause Test step/Remedy 1) Entire rear seat heater system does not function. Voltage supply, rear HS control module (N25/6) 23 1.0 Left rear seat cushion and seat backrest heating does not function. Voltage supply, rear HS control module (N25/5) Left rear heater switch (S51/3) Left rear seat cushion heater element (R13/5) and left rear backrest heater element (R13/6) 23 1.0 23 3.0 23 4.0 Right rear seat cushion and seat backrest heating does not function. Voltage supply, rear HS control module (N25/5) Right rear heater switch (S51/4) Right rear seat cushion heater element (R13/7) and right rear backrest heater element (R13/8). 23 1.0 23 8.0 23 9.0 LED'S in left rear heater switch (S51/3) or right rear heater switch (S51/4) do not function. Seat heating does function. S51/3 LED'S S51/4 LED'S 23 6.0 23 11.0 Dimming of indicator lamps in left rear heater switch (S51/3) or right rear heater switch (S51/4) does not function. S51/3 dimming S51/4 dimming 23 2.0, 7.0 23 2.0, 12.0 Illumination of indicator lamps in left rear heater switch (S51/3) or right rear heater switch (S51/4) does not function. S51/3 illumination S51/4 illumination 23 5.0 23 10.0 1) Observe Preparation for Test, see 22.