Date registered: Mar 2008
Vehicle: CLS550 Master Lease, 1990 300zxTT, 2000 camry
Location: Augusta, Ga
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Im sorry but that post didnt really answer any of his questions. Nowhere in that thread was an answer for the problem ever found. But please let me clarify why the key or aam is the most likely culprit. The key for a 163 ML has a finite number of ignition cycles, this number is around 100k and once that number is reached that key will no longer communicate with the AAM to allow the vehicle to run. Most people will never reach 100k start cycles, but if the key is exposed to moisture magnetic fields other things the key could think it hit 100k cycles. The AAM is what allows drive authorization, if it sees the vehicle startup without drive authorization(i.e. the key has reached its finite number of starts) it will let the vehicle run for a few seconds and then shutoff. If the crank position sensor completely fails then the vehicle will turn over but not start no exceptions, if it is only failing under high temperature then the car will start fine after cooling off. I noticed someone saying that the crank sensor will not set a code, thats not true the crank position sensor can set a code if it fails just like the cam sensor. A vehicle with this problem I would recommend taking it to a trained technician familiar with MB systems as our equipment is not the easiest to diagnose.