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I HAVE A 1998 BMW 740IL , MY WIFE TODAY GOT A BATTERY PUT IN TODAY NOW RADIO DOES NOT WORK.IVE HAD BATTERY OUT BEFORE AND NEVER HAD PROBLEMS ANY IDEAS MUCH APPERCATED
Re: I HAVE A 1998 BMW 740IL , MY WIFE TODAY GOT A BATTERY...
Could have blown a fuse, or someone could have messed with the radio, or it's wiring when the battery was off, activating a Delco-Lok anti theft system.
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For the BMW 7 series (E38) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 model year. Fuse box in engine compartment. fuse box location. Open the hood.
see if there is an inline fuse on the power wire to the radio. It appears to be a known issue. Check out the link
You'll need the vin from the 740il or perhaps a code on the radio or even the s/n ?n the radio and a dealer can help you. You may have to indicate to the dealer the radio wasn't stolen/hot.
check battery cables.make sure they are not loose are or corroded.if battery cables okay.problem could be faulty starter - electronic immobilizer control - ignition switch + check its fuse first.if you disconnect battery cables besure to turn off radio so you wont lose code.
You may have fried the computer control. Suggest you have a pro check it out. At this point, you do not have the needed computer equipment to check it out.
If you checked all the fuses try putting the car in neutral sometimes the shifter gets misadjusted and wont start till the car is completely in park.If not check for a lose wire to the starter.If the car has an after market alarm you will have to turn it off before starting there should be a little buuton under the drivers dash or kick panel.GOOD LUCK
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