Originally Posted by c3212571
Sounds like craks sensor going bad. or is bad!
!!!!!!!!!!!!always change tranny fluid!!!!!!!!!!!! on ML's!!!!!!!!!!!!
The CPS has different fault characteristics than indicated by the OP.
It is more likely the AAM/DAS key failure.
I have unfortunately experienced both failures in my 98ML.
There is a problem with jump starting the early ML's. If you leave the key in the ignition when trying multiple restarts it will render the key useless.
The Key's RFID chip has lost synchronization with the DAS (Drive Authorizing System). The only fix is to buy a new key and have it programmed into the AAM computer which contains the DAS. For some reason the old key can no longer be programmed into the DAS. Some refer this as Frying the key's RFID chip.
The 98ML's came with 3 keys. Did you try one of the other keys? They should still work.
The AAM can only be programmed with 8 keys maximum so I hope you still have one of the 5 remaining programming spaces left if you need a new key. If not a new AAM is very expensive. This can only be done at a Mercedes dealer.
In the future if the ML does not start, immediately REMOVE the key from the vehicle, charge the vehicles battery, than return the key to the vehicle and attempt another restart.
The Remote's battery has no function in an RFID DAS system. It's only for the remote entry & alrm system.