DJFarmo
New Member
Hi,
I currently have a problem with the rear lights going haywire on my 2003 S211. It has been going on since I acquired the car 1 year ago. It's very much an intermittent fault - when it occurs the main (outer) rear lights switch off and the backup lights (in the boot lid) come on instead. I also get 6 messages appear on the MFD which are shown at the bottom of the post.
When the problem occurs and the backup lights come on, the offside rear brake/side light then begins to flash every 3 seconds or so, whilst the near-side one remains completely out. Sometimes the car will switch back to the normal lights; other times the backup lights will continue to be used for the rest of that day, week, etc.
I have an Avantgarde model, so the lights in question that go out are LED lamps, though the backup lights use conventional bulbs.
I've downloaded what I believe to be the relevant wiring diagram from WIS, but I have a question. I have included an excerpt of the wiring diagram below - please click it to view it in high resolution, or click the download link below it to get the highest possible resolution image, which will make the symbols in the green box much easier to see
Full resolution image can be downloaded here: https://docs.google.com/leaf?id=0B6...MGU5MDIyZjg2N2Vm&sort=name&layout=list&num=50
I've also attached to this post the legend for this diagram. I have crossed in red out two of the boxes in the diagram as the legend would indicate that these connections are specific to saloons, whereas I have an estate.
My question relates to (what I believe to be) the connector between the rear signal actuation module (SAM) and the wire that goes to the main rear light clusters that I am interested in (the yellow box).
I've looked the the explanatory documentation in WIS, but I've not found anything relating to the depiction of connectors on diagrams.
Questions:
I've also included pictures below of the fault messages on the MFD. They are shown in the order in which they appear on the display. Would they suggest that it is the offside rear light (the one that flashes every 3 seconds or so when the backup lamps come on) that is the problem, rather than the near-side one that just remains off when the backup lamps are on?
If anyone can give me any info on this that would be much appreciated. My plan is to strip it all down on Sunday, but I'd like to do my homework before I do that!
Thanks for looking.
I currently have a problem with the rear lights going haywire on my 2003 S211. It has been going on since I acquired the car 1 year ago. It's very much an intermittent fault - when it occurs the main (outer) rear lights switch off and the backup lights (in the boot lid) come on instead. I also get 6 messages appear on the MFD which are shown at the bottom of the post.
When the problem occurs and the backup lights come on, the offside rear brake/side light then begins to flash every 3 seconds or so, whilst the near-side one remains completely out. Sometimes the car will switch back to the normal lights; other times the backup lights will continue to be used for the rest of that day, week, etc.
I have an Avantgarde model, so the lights in question that go out are LED lamps, though the backup lights use conventional bulbs.
I've downloaded what I believe to be the relevant wiring diagram from WIS, but I have a question. I have included an excerpt of the wiring diagram below - please click it to view it in high resolution, or click the download link below it to get the highest possible resolution image, which will make the symbols in the green box much easier to see
Full resolution image can be downloaded here: https://docs.google.com/leaf?id=0B6...MGU5MDIyZjg2N2Vm&sort=name&layout=list&num=50
I've also attached to this post the legend for this diagram. I have crossed in red out two of the boxes in the diagram as the legend would indicate that these connections are specific to saloons, whereas I have an estate.
My question relates to (what I believe to be) the connector between the rear signal actuation module (SAM) and the wire that goes to the main rear light clusters that I am interested in (the yellow box).
I've looked the the explanatory documentation in WIS, but I've not found anything relating to the depiction of connectors on diagrams.
Questions:
- What does the number '14' represent? Is it a connector that plugs into the SAM?
- What do the terms 'SL' and 'FRA' that can be seen in the green box mean?
- Do the numbers next to these terms refer to the terminal number within a connector plug? If so, will WIS contain a diagram of that plug that I can view?
I've also included pictures below of the fault messages on the MFD. They are shown in the order in which they appear on the display. Would they suggest that it is the offside rear light (the one that flashes every 3 seconds or so when the backup lamps come on) that is the problem, rather than the near-side one that just remains off when the backup lamps are on?
If anyone can give me any info on this that would be much appreciated. My plan is to strip it all down on Sunday, but I'd like to do my homework before I do that!
Thanks for looking.
Last edited:
Possible dirty fuse or relay blades in the rear sam?
