just purchased a 1997 850ci and needed a inspection and the car failed because BMW could not get a reading from theMemory Control Modules. they asked if I had replaced or disconnected the battery , I told them no but when I received the car a week ago I had to re enter the radio code. they said that I have to put some miles on the car and then they will retry. Does this make sense and if so how many miles do I have to drive before retest? already at 110 miles
There should be no problem reading any of the modules after the battery has been disconnected - they all have non-volatile memory in the OBDII cars...
Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i
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Actually I went through a similar thing a while back. My car occasionally throws a random check engine code that I’m still chasing down, but one time it happened a day or two before my scheduled appointment for inspection. I had to put 500 miles on it before they could read whatever code they are reading during these inspections.
I’m also assuming this only applies to OBD-II cars.
Mike Barrett
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Mike Barrett
94 850CSi, Hellrot over silbergrau dunkel/silbergrau hell
96 850Ci, Oxfordgrun over silbergrau hell
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