Martian
Senior Member
- Joined
- May 2, 2020
- Messages
- 56
- Reaction score
- 34
- Location
- Lincolnshire
- Your Mercedes
- E270 Aventgarde, (2005) CLK 320 AMG Convertible, (2002)
All,
I recently purchased an E270 CDi MY2005 that would appear to be in very good fettle, (hopefully not tempting fate), other than the drivers door mirror and indicator repeater LED's not working.
I removed the door card just to check that the door module had all the connectors plugged in correctly.
Here is the door module: -
I took a look at the circuit board but it will be difficult to repair without schematics - should I ever have the need to do so!
Although I could have monitored the various outputs, (from the module to the door mirror), I considered it to be just as quick to remove the door mirror and pick up the various feeds from there!
This was not quite as simple as it first appeared as when I found time to remove the door mirror, (and check the wiring for the mirror motors and indicator LED's), I found that I had not got the right Torx bit!
The mirror retaining bolts are 5 point HOLLOW Torx, (T20 or T25 - I can't remember the exact size - apologies), obviously so as it reduces the risk of an 'opportunist' thief pinching the mirror presumably?
Here is one of the retaining bolts: -
Once I had obtained a suitable set of 5 Point Hollow Torx bits I removed the mirror, (there is NO need to remove the door card as the two cables can be unplugged from the Door Module by removing the cosmetic cover on the inside of the door immediately below the Tweeter).
The two inner bolts are quite difficult to access and you can't use a straight shaft without snagging the mirror body so I simply used the Torx bit and turned it with a small pair of molegrips - although a pair of pliers would have worked just as well.
Once I had removed the mirror there was nothing obvious to cause me any concern, (but the mirror was in the extended, normal, position), so when I plugged it back into the Door Module and 'retracted' the mirror I was greeted by the following 'mess'!!
Six of the cables were completely broken and one was still intact, (the insulation had not been cut), but the conductors had been severed! Ironically 4 of the cables were colour coded but the remaining three were not - they were all black!!
A close up . . .
As I didn't want to waste time by having to remake connections I paid close attention to the exact lengths of the severed cables in order to ascertain which black cables went to which and I got it right first time fortunately with no incorrect connections!
I simply soldered very short pieces of thin gauge cable onto the severed cables and then used heat shrink to insulate them all and the mirrors and indicator now work as normal and the error message is no longer present on the dash!!
This is no doubt a common problem - due to the high number of mirror retract actions undertaken over several years and is, therefore, not too much of a surprise?
I believe that there is also an auto mirror dimming and heater function, too, but haven't had the right circumstances to test these functions yet but I have every confidence they will be ok too - otherwise it will be out with the soldering iron once again!
I hope that this may be of benefit to some of you and is my first attempt at reciprocating your very kind responses to MY earlier enquiries - although I hope that I will not be getting too intimately acquainted with my new acquisition too soon!
I recently purchased an E270 CDi MY2005 that would appear to be in very good fettle, (hopefully not tempting fate), other than the drivers door mirror and indicator repeater LED's not working.
I removed the door card just to check that the door module had all the connectors plugged in correctly.
Here is the door module: -
I took a look at the circuit board but it will be difficult to repair without schematics - should I ever have the need to do so!
Although I could have monitored the various outputs, (from the module to the door mirror), I considered it to be just as quick to remove the door mirror and pick up the various feeds from there!
This was not quite as simple as it first appeared as when I found time to remove the door mirror, (and check the wiring for the mirror motors and indicator LED's), I found that I had not got the right Torx bit!
The mirror retaining bolts are 5 point HOLLOW Torx, (T20 or T25 - I can't remember the exact size - apologies), obviously so as it reduces the risk of an 'opportunist' thief pinching the mirror presumably?
Here is one of the retaining bolts: -
Once I had obtained a suitable set of 5 Point Hollow Torx bits I removed the mirror, (there is NO need to remove the door card as the two cables can be unplugged from the Door Module by removing the cosmetic cover on the inside of the door immediately below the Tweeter).
The two inner bolts are quite difficult to access and you can't use a straight shaft without snagging the mirror body so I simply used the Torx bit and turned it with a small pair of molegrips - although a pair of pliers would have worked just as well.
Once I had removed the mirror there was nothing obvious to cause me any concern, (but the mirror was in the extended, normal, position), so when I plugged it back into the Door Module and 'retracted' the mirror I was greeted by the following 'mess'!!
Six of the cables were completely broken and one was still intact, (the insulation had not been cut), but the conductors had been severed! Ironically 4 of the cables were colour coded but the remaining three were not - they were all black!!
A close up . . .
As I didn't want to waste time by having to remake connections I paid close attention to the exact lengths of the severed cables in order to ascertain which black cables went to which and I got it right first time fortunately with no incorrect connections!
I simply soldered very short pieces of thin gauge cable onto the severed cables and then used heat shrink to insulate them all and the mirrors and indicator now work as normal and the error message is no longer present on the dash!!
This is no doubt a common problem - due to the high number of mirror retract actions undertaken over several years and is, therefore, not too much of a surprise?
I believe that there is also an auto mirror dimming and heater function, too, but haven't had the right circumstances to test these functions yet but I have every confidence they will be ok too - otherwise it will be out with the soldering iron once again!
I hope that this may be of benefit to some of you and is my first attempt at reciprocating your very kind responses to MY earlier enquiries - although I hope that I will not be getting too intimately acquainted with my new acquisition too soon!
