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Thread: Electrical gremlins - help!

  1. #1
    Join Date
    Jun 2007
    Location
    Scottsdale, AZ
    Posts
    1
    My Cars
    98 740il

    Electrical gremlins - help!

    So I have this dream car - a 98 740il - and it has ghosts! I get in, turn the key, and sometimes the radio and display computer comes on; other times not. Sometimes I can turn the key off, then on, then off, and then on and then it will come on. Sometimes not. Tonight, I did the key sequence 10 or more times and still no radio or computer - so I drove home in silence - but, the entire way home the dome and door lights kept coming on then going off, coming on, then going off - is my car haunted?

  2. #2
    Join Date
    Apr 2003
    Location
    Seal Beach, Ca.
    Posts
    3,686
    My Cars
    2003 540s, 2000 740s
    My vote is it's your ignition switch. Common problem. But, I'd also pull your negative battery cable for 15 minutes & see if that helps (it's free & easy to do). Or, it could be your battery going bad. But, like I said, my vote is your ignition switch.
    <== Steptronic Sealbeach740
    2000 740i sport: 74k Green/Tan chrome MPars, clear corners, quad brake lights, AIC hi-beams, Hoen fogs, 16x9 screen, MKIV, TFT LCD screen in back, license plate backup camera with "on demand" switch, iPod audio/video (CDC/iPod audio switching, iPod video on 16x9 screen), Basslink, gauge rings, ///M pedals, switched steptronic +/- shifting mode, E46 paddle shifter steering wheel, Dinan engine & tranny software upgrade, DDEs controlled via Euro fog light switch, painted calipers with "BMW" lettering, windows up/sunroof close via remote.

    2003 540i sport: 81k, Sterling grey/grey, MKIV Nav, PDC & CWP - Added license plate backup camera with "on demand" switch, paddle shift steering wheel, windows up/sunroof close via remote, Akebono's, painted calipers with "BMW" lettering, quad brake lights, iPod audio via AUX mode/video via 16x9 screen, BMW TV tuner, ///M pedals & gauge rings.

  3. #3
    Join Date
    Sep 2005
    Location
    San Diego
    Posts
    116
    My Cars
    01 740iS; 88 325iC; 84 633csi, 00 Navigator
    I second the ignition switch. Just don't confuse the switch with the lock (where your key goes) The switch is a seperate part and very easy to replace DIY!
    2001 740i Sport Black on Black, 16:9 Nav, Basslink, M-Pars, Chrome Strong Strut, Quad Brake Lights, Crystal Tails, Solaris Signals and Back Up Lights, Power Folding Mirrors, Chrome Guage Rings, Chromeline Headlights, CCFL DDE's, Euro Rear Fog Light Switch, Carbon Fiber Pedals, RevHigh CAI, M5 Style Trunk Lip Spoiler, Blacked out '97 Grills, White and Black C.F. Roundels, HID Fog Lights, Magnaflow Street SS 14816 Mufflers, DICE HD Radio, iPod, Sirius Satellite, Brembo Cross Drilled Rotors, New Painted Calipers, SS Brake Lines, MKIV Nav Computer. Coming soon: Bluetooth.
    1988 325iC Triple Black, in restoration process.
    1984 633CSi Black on Black - Shark Perfection


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