Question about 2002 BMW 5 Series

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Elecrtial problem left my lights on all day battery drained, jumped started it and my electric wondows dont work, window wipers are on constanly and cruise control has totaly gone. please can anyone help me. its a 5series 53plate

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Sounds like a newer 5 series. The SZL module located in the steering column has failed. Most common indication of this failure is the wipers being stuck on. Unit will need to be coded by a professional. Just for fun you can try a memory dump: remove negative battery cable and then positive battery cable and touch them together for 30 minutes then reconnect everything and hope for the best. If the cables are too short to reach each other slide a screwdriver in through the negative opening and into the positive opening. MAKE SURE NEGATIVE CABLE DOESN'T TOUCH THE POSITIVE CABLE WHILE IT IS CONNECTED TO THE VEHICLE.

Posted on Jun 21, 2009


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Posted on Jan 02, 2017


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Citroen relay 2011 i have no wipers windows or mirrors and the battery drains in about 4 days ??? otherwise faultless , any ideas , many thanks

Windscreen wipers not working after jump starting vehicle.

Affected vehicles

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  • Windscreen wiper motor and engine wiring harness damage caused by jump starting vehicle using incorrect earth point.


Parts Earth point warning label
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Fuse 30amp

Hello. Your battery is run down, discharged, and will need charging up before it will start the car on its own. Don't know if that's why the car would not start the first time you tried it. It could be, if the battery wasn't spinning the engine fast enough to start.
You could try getting a boost from another car with battery jumper cables. Let someone hook it up, or show you how. If the engine won't start after a couple of tries, there may be some other reason it won't start, other than a weak battery. Better have the battery charged up off the car, and see a mechanic about the no start. But it may start with a strong battery. Now you know how a low battery affects the car's electrical system, so you are no longer totally clueless. Good luck.

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check the vehicle, something is on constant, ig power window motor has gone bad and is on constanly althou the power window is not moving, check the windshield wipers motor, do a visual inspection of the vehicle.

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Can the rear wiper drain the batter?

It's 1.48 am here and I'm rather sleepy but the other thing that springs to mind (bearing in mind the electrics on all cars are basically the weakest link) is a power drain. Basically that means there is still a loose connection somewhere on the car and quite possibly an earth.
If you lift the hood and check on the inside left and right wings you should see a whole bundle of sheathed and/or unsheathed wires bolted or held by a screw. Check the tightness and ensure this area is clean.
The weather could also be another factor, electrics don't like the cold and wet, so always keep a can of WD40 in the car and spray away at the electrics if you have car starting problems. Especially where the spark plug leads connect to the plugs.
nite nite

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Sent you two .pdfs this morning; they should help you out. Thanks for choosing FixYa!

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