The dealer's computer found the problem quickly on my W140 (500SEL)

Fo me, it was a fuel system control unit.

We could not rationalize why the ASR light would come on with a fuel system problem, but it did.

Good Luck.

Suggetstion - use Mercedes computer to resolve - then take your own actions to fix.

__________________
Thanks for the help
Bill Fisher

'86 560SL (186K) - Now a 'classic' : Registered as an Historic Vehicle
02 E430 in the stable
'14 LS460 (Lexus)
- - - - -
'95 E420 (198K) found a new home
'99 E320 (80K) (gave it's life for me as we hit a bumper)
'95 E420 (231K) Sold to a happy buyer, new to Mercedes
'90 300E (65K) Sold to an Mercedes Lover
'92 190E (215K) - retired to the salvage yard
'93 500SEL (214K) - Moved to another family, still runs like a young pup