|
Not sure, I'd have to get access to wiring diagrams to tell what the effect is of a bad K40 relay is on DAS, and even then you'd still have to conpare that to your 140, I'm not even sure if a 140 has a K40 relay. Pretty dicey comparing different years and models to each other on MB.
What I do know is that the 210 (assuming it was a E320) had a different DAS system, it was DAS2, not DASX. UNLESS it was an E420 built before 6/96 (nice, huh?) in which case it was (ready for this?) DAS2a.
Anyways, yes an unauthorized start attempt on a DAS2 car will make the red and green lights flash, BUT they do not do this on your 140! The engine just doesn't start and that's all. To the previous comment on having no starter opertaion if the DAS isn't authorized, this is only true (in 1997) with the 202, all the other cars will crank but not start. Very tricky, very confusing time period.
My own suspicion would be the antenna ring around the ignition switch, these were suspect on various manufacturers, not just Mercedes, I've seen a few bad ones so could possibly be why you don't always get authorization. (EDIT: assuming you get the same effect with different keys. My #1 suspicion would be a bad key, but unlikely you have 2 intermittently bad keys)
The 210 you had did not have this type of system, on that one the DAS was activated and deactivated simply by locking and unlocking the car, either with the remote or the key blade, it didn't matter. If the car was locked, it wouldn't start, if it was unlocked (properly!) it would start. If someone jimmied there way in to the car or broke the window, it would not start.
Gilly
|