On my 2.5ConnoisseurSe Hiline a false indication of LH brake light failure has appeared and cannot be cancelled. Bulb and wiring are intact so problem is likely to be in the LSM (Light Switch Module). Relevant fuses 9.11,13,25 wer removed overnight hoping for a general reset but no change. I understand that the LSM also holds mileage and VIN (Vehicle Identification Number) data and must be rocoded using T4 (Testbook version 4.Computer Diagnostic System) if changed and furthermore S/H LSMs cannot be recoded. There seem to be two (or more) types of LSM YW2000 200 and 201. What is the difference? Mine has a thumbwheel for headlamp levelling - others do not. Can the front panel be changed and added to the rest of the module if the new module does not have the thumbwheel and will it then work? Are new modules with thumbwheel available anywhere? Any comments and advice, particularly if the is an alternative solution to this problem will be gratefully received. Thanks.
I've never heard of a failed one, though it could happen. You could try a second hand one to prove it out, but there would be a mileage mismatch. It would prove the point, though.
I think it's now possible for some people to reset the memories on LSMs to as new, David (Monk) might be able to comment.
