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12.8 Mirror, Steering Column Adjustment, Heated Mirrors (MSC) > 11 Diagnosis - Function Test

Diagnosis - Function Test

Preparation for Test:
1. Review ,

22,

23 entirely.
2. Battery voltage 11 - 14 V,
3. Fuses are OK.
4. Convenience feature is functional.

Test step/Test scope Test condition Nominal value Possible cause/Remedy 1)

1.0 Left outside rearview mirror
Vertical adjustment Turn outside rearview mirror-left/
right (S21s8) to left position.

Press outside rearview mirror-vertical adjustment switch (S21s6):
Forward:
Backward:

Left outside rearview mirror:
Adjusts UP
Adjusts DOWN 23 3.0
23 5.0

2.0 Left outside rearview mirror
Horizontal adjustment Turn outside rearview mirror-left/
right (S21s8) to left position.

Press outside rearview mirror-horizontal adjustment switch(S21s7):
Left:
Right:

Left outside rearview mirror:
adjusts to left
adjusts to right 23 4.0
23 6.0

3.0 Right outside rearview mirror
Vertical adjustment Turn outside rearview mirror-left/
right (S21s8) to right position.

Press outside rearview mirror-vertical adjustment switch(S21s6):
Forward:
Backward:

Left outside rearview mirror:
Adjusts UP
Adjusts DOWN 23 7.0
23 9.0

4.0 Right outside rearview mirror
Horizontal adjustment Turn outside rearview mirror-left/
right (S21s8) to right position.

Press outside rearview mirror-horizontal adjustment switch(S21s7):
Left:
Right:

Left outside rearview mirror:
adjusts to left
adjusts to right 23 8.0
23 10.0

5.0 Left outside rearview mirror
Mirror Heating Ignition: ON
If outside air temperature is > 15° C (59° F): Spray mirror with "Electronic Freeze Mist" (aerosal can) for 10 seconds to coat mirror glass with frost.
Left outside rearview mirror glass warms up after approx. 1 minute.

ON/OFF temperature switching thresholds:
< 15° C (59° F): Mirror heating ON
> 25° C (77° F): Mirror heating OFF
23 11.0

6.0 Right outside rearview mirror
Mirror Heating Ignition: ON
If outside air temperature is > 15° C (59° F): Spray mirror with "Electronic Freeze Mist" (aerosal can) for 10 seconds to coat mirror glass with frost. Right outside rearview mirror glass warms up after approx. 1 minute.

ON/OFF temperature switching thresholds:
< 15° C (59° F): Mirror heating ON
> 25° C (77° F): Mirror heating OFF
23 12.0

1) Observe Preparation for Test, see 22.