Thread: disconect battery

Follow the disconnect procedues from Ffrr below then disconnect both clamps from the battery poles and hold the clamps together for 10 secs. This drains the ECUs power reserve and clears faults from the fault memory. If you still have a problem after 2 goes you will need a fault tool to clear the problem.
Reinstall also as below.

DISCONNECTION:

Turn off the ignition, and remove the key. (Keep the key close by you though, as the alarm may go off and you need to disable it)
Ensure the alarm is disabled.
Wait at least 2 minutes ( I gave it 5) for car systems to shut down such as the SatNav and Fuel Guage
Yes, now you can lift the bonnet and disconnect the Earth terminal (brown lead)
Now wait 10 minutes ( I gave it 20) for the SRS system to shut down. This is important because of what is to follow!
You have a positive lead running to a fitting on the bulkhead in front of the battery, this fitting is used for connecting jump leads. Undo the nut (13mm) at the back, and release the cable, placing out of the way.
Now unclip the cover for the battery terminal nut and undo the nut until loose.
Now unclip and take apart the multiplug which runs to the positive connector.
Now unclip the cover and undo and remove the nut for the battery disconnect system. Lift off the cable and set aside. (This is why item 5 is important, as this thing is designed to explode and break the battery connection in the event of a crash, so it works alongside the SRS)
OK, now you can wiggle and remove the positive connector from the battery terminal.
Battery disconnected!



RECONNECTION:

Refit the battery disconnect lead to the positive connector unit and tighten nut.
Refit the positive connector to the battery terminal and tighten nut.
Reconnect the “jump lead” cable to the bulkhead and tighten the nut.
Reconnect the multiplug.
Reconnect the negative terminal and tighten nut.
Start the engine, and allow systems to fire up and do their thing.
Finally, with the engine running, turn the steering wheel from full LH lock to full RH lock. This resets the DSC so it knows about the steering wheel position.
Hopefully, everything back to normal.


Laurie