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  1. #1
    Join Date
    Jan 2021
    Location
    UK
    Posts
    1
    My Cars
    BMW x5 e70 3.0 xdrive

    BMW x5 e70 electrical issues

    I got to my car this morning and my remote fob wouldn't work properly. I could hear some movement in the door but it wasn't sufficient to unlock. After unlocking manually and starting the engine, the satnav map had disappeared and also the internal fan had reduced in power. Also TMC was displayed at the bottom on the main computer / entertainment LCD.

    Does anyone know whatvthe issue is ?

  2. #2
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,933
    My Cars
    2018 BMW M240i
    It sounds like a general electrical issue, likely low voltage. How old is the vehicle? How many miles on the odometer? How old is the battery? Do you own a digital volt meter? If you do, open the hood (bonnet?) and check the voltage at the jumper post located under the red plastic cover. Use the engine as the ground/earth. Check the voltage with nothing on, then with the engine idling.

    These cars are rolling computers, so whacky voltages cause whacky issues.

  3. #3
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    Exactly right

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