Exterior mirrors: Difference between revisions
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== Driver-side exterior rearview mirror automatic dimming feature == | |||
<!-- GF68.49-P-2100-04S Inside rearview mirror, task --> | |||
The inside [[rearview mirror]] (A67) in combination with the overhead | |||
control panel control module (N70) serves as master for dimming | |||
the electrically adjustable and heated left outside mirror (M21/1) | |||
(special equipment). | |||
<!-- GF88.79-P-2003S, Automatic dimming feature for exterior rearview mirror on driver's side, function --> | |||
<!-- 220.063 /065 with CODE (249b) Automatic dimming interior and exterior (driver-side) rearview mirrors --> | |||
{| | |||
|[[File:W220_mirror_automatic_dimming_feature.png]] | |||
| | |||
* 1 - CAN-message: "Shift lever position" | |||
* 2 - CAN-message: "Reverse gear engaged" | |||
* A67 - Interior rearview mirror unit | |||
* M21/1 - Left electrically adjustable and heated exterior rearview mirror | |||
* M21/2 - Right electrically adjustable and heated exterior rearview mirror | |||
* N15/5 - Electronic shift lever module control module | |||
* N70 - Overhead control panel control module | |||
* N73 - Electronic ignition/starter switch control module | |||
|} | |||
Function prerequisites: | |||
* Voltage not too low or too high | |||
* C.15R or C.15 ON | |||
The light reaching the surface of the mirror is reflected to a greater | |||
or lesser extent depending on the magnitude of the control | |||
voltage. The control voltage is regulated by the interior rearview | |||
mirror unit (A67) (master) and the overhead control panel control module (N70). | |||
Two discrete leads are connected to the left front door control module (N69/1) | |||
for this purpose (vehicles with right-hand steering: right front door control module ((N69/2)). | |||
Regulation is accomplished depending on the ambient light and | |||
the light reaching the mirror. These two variables are measured by | |||
the ambient light sensor (A67h2) in the interior rearview mirror | |||
housing (rear) and the automatic dimming interior rearview | |||
mirror sensor (A67h1) in the mirror glass in the interior rearview | |||
mirror unit. | |||
If one of the interior lights is switched on or the CAN message | |||
"Reverse gear engaged" is received from the electronic ignition/ | |||
starter switch control module (N73), the exterior rearview mirror | |||
as well as interior rearview mirror become brighter. | |||
Revision as of 22:55, 13 February 2017
Facelift
Parts
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Outside rearview mirror
Part number A2208100576 (left) and A2208100876 (right). The part comes without glass and cover as shown in the picture below. The part is attached to front door using 3 A0029843729 (M4X22) bolts.
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Mirror cover
Part number for mirror cover is A2208100964 (left) and A2208101064 (right). The part comes without turn signal light module.
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Turn signal light
Turn signal light (blinker lamp) has part number A2208200521 (left) and A2208200621 (right).
For the vanity light bulb there is LED upgrade available.
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Adjustment motor
Electronic adjustment motor A2038202242 is used on both sides.
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| Error Code | Generated By | Description |
|---|---|---|
| B1208 | DCM-FL - Door control module front left | The signal from component M21/1r3 (Mirror in/out adjustment potentiometer) is faulty. |
Seals
Mirror seals (gaskets) have part number A2208110198 (left) and A2208110298 (right).
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Glass
Original mirror glass is expensive high theft risk part (especially driver's side mirror for option code 249 - INSIDE AND OUTSIDE MIRROR AUTOMATIC DIMMING).
Aftermarket mirrors with heating are available in ebay for as cheap as 15 EUR.
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DIY
Pre-facelift
DIY
- Remove the mirror cover by pressing in a small spring clip at the top.
- Release the mirror housing cover by also pressing in a spring clip near the outer edge.
Driver-side exterior rearview mirror automatic dimming feature
The inside rearview mirror (A67) in combination with the overhead control panel control module (N70) serves as master for dimming the electrically adjustable and heated left outside mirror (M21/1) (special equipment).
|
|
Function prerequisites:
- Voltage not too low or too high
- C.15R or C.15 ON
The light reaching the surface of the mirror is reflected to a greater or lesser extent depending on the magnitude of the control voltage. The control voltage is regulated by the interior rearview mirror unit (A67) (master) and the overhead control panel control module (N70). Two discrete leads are connected to the left front door control module (N69/1) for this purpose (vehicles with right-hand steering: right front door control module ((N69/2)).
Regulation is accomplished depending on the ambient light and the light reaching the mirror. These two variables are measured by the ambient light sensor (A67h2) in the interior rearview mirror housing (rear) and the automatic dimming interior rearview mirror sensor (A67h1) in the mirror glass in the interior rearview mirror unit.
If one of the interior lights is switched on or the CAN message "Reverse gear engaged" is received from the electronic ignition/ starter switch control module (N73), the exterior rearview mirror as well as interior rearview mirror become brighter.