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Re: HOW DO YOU CHANGE THE BATTERY ON THE REMOTE KEY FOR...
Hi , unless you car has been fitted with keyless entry you can not replace the batteries on the romote key , it sounds like the only sollution is to reolace the romote , regards mark
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When you disconnect the battery, it causes the anti-theft system pairing to break. On reconnecting the battery, the key and transponder chip need re-pairing. There are some ideas in the link, but with a BMW your best bet is to call a mobile auto-electrician or an auto locksmith. They both have pro grade scan tool computers that can reset the anti-theft system and diagnose any other electrical issues.
not real likely unless battery is goin dead and alt.is bad.Chech the small ground cable attached close to battery on the frame.i have had this problem recently and seen it happen alot.its a small black wire and usually their are sometimes other grounds to body at rear of engine.any of these can make guages act up then stop and headlights go out or all lights and speedometer stop.all kinds of weird things,dim interior light,dash light so on,hope you fet it.
At first,it seems your remote has lost its code.Try using your other keys.
Do you have all doors+hood properly closed?Does your key actually turn in door lock!
Its a standard battery,take key to local accessory shop
There is a couple of different sizes,yours is the smaller 3v
You will need to reprogamme the key
Enter car,shut all doors
Switch ignition on/off,remove key
PRESS AND HOLD UNLOCK BUTTON
Press lock button 3 times whithin 10 seconds,release unlock
Central locking will lock/unlock rapidly to confirm reset
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