Front heated seats (HS), diagnosis, troubleshooting - AD91.30-P-5000A
MODEL 170, 202 as of 1.9.95, 208, 210 up to 30.6.99 with CODE (873) Electrically heated left and right front seats
MODEL 210 as of 1.7.99 with CODE (873) Electrically heated left and right front seats except CODE (401a) Front seat ventilation
| Front heated seats (HS) diagnosis, previous knowledge | AD91.30-P-2000A | ||
| Troubleshooting | |||
| Complaint | Possible cause | Notes | Remedy/test step |
| Complete front heated seats, left and right, inoperative | Front HS control module (N25/5), Voltage supply | AD91.30-P-6000-01A | |
| Left front seat heated cushions and backrest heated cushions inoperative | Front HS control module (N25/5), | AD91.30-P-6000-01A | |
| Power supply | AD91.30-P-6000-05A | ||
| Left front seat heated cushion (R13/1) and left front backrest heated cushion (R13/2) | AD91.30-P-6000-06A | ||
| Right front seat heated cushions and backrest heated cushions inoperative | Front HS control module (N25/5), | AD91.30-P-6000-01A | |
| Power supply | AD91.30-P-6000-07A | ||
| Right front seat heated cushion (R13/3) and right front backrest heated cushion (R13/4) | AD91.30-P-6000-08A | ||
| Indicator lamps in left front heated seat (HS) switch (N25/5s1) or in right front heated seat (HS) switch (N25/5s2) inoperative Seat heater works | N25/5s1 indicator lamps | Front HS control module (N25/5) | |
| N25/5s2 indicator lamps | Front HS control module (N25/5) | ||
| Indicator lamps in left front heated seat (HS) | N25/5s1 dimming | AD91.30-P-6000-02A | |
| switch (N25/5s1)/right front heated seat (HS) | N25/5s2 dimming | AD91.30-P-6000-03A | |
| switch (N25/5s2) do not dim | AD91.30-P-6000-04A AD91.30-P-6000-02A AD91.30-P-6000-03A AD91.30-P-6000-04A |
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| Illumination in left front heated seat (HS) switch (N25/5s1)/right front heated seat (HS) switch (N25/5s2) does not function | N25/5s1 Illumination | AD91.30-P-6000-02A | |
| N25/5s2 Illumination | AD91.30-P-6000-03A AD91.30-P-6000-04A Front HS control module (N25/5) |