2004 bmw x5 4.4i

Asked by May 11, 2016 at 04:48 PM about the 2004 BMW X5 4.4i AWD

Question type: Maintenance & Repair

After changing alternator and installing spark
plugs and new battery my 2004 bmw x5 4.4i acts
like it doesn't want to start up. It's displaying check
brake light, check coolant level,  and engine light is
flashing on the dash board.. what could be the
problem.?

1 Answer

109,945

Engine management has been disabled when you disconnected all of the power, the only way that I know of to get it back is to have the Dealer reflash the system to match the vehicles VIN. They make what is called a code saver or preset saver, it either plugs into the power port or the OBD plug depending on what model you have, every Tech needs one of these in his tool box, and that will maintain the system while repairs are being made. HTH

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