bmw e39 facelift key

[saeedmayat]

hi, we have BMW 525i 2003 facelift the battery of the one key is presumably flat can i change the battery without having to purchase an expensive new key.

 

[S1NGH 001]

As far as I know the battery in the key normally charges when inserted into the ignition. Doubt the battery can be changed with the Diamond keys, I may be wrong :fencelook:

 

[ChefDJ]

I know a guy who can make you an original brand new key for 2k. PM me for number if you want it. You'll pay a lot more at the dealers...

 

[S1NGH 001]

Dealer will charge you R2200 for a new key :thumbs:

 

[ChefDJ]

They quoted me 3.5k without coding :fencelook:

 

[S1NGH 001]

They quoted me 3.5k without coding :fencelook:

Which dealer did you go to :tease:

 

[ChefDJ]

Autobahn Isando

 

[S1NGH 001]

Daylight robbery :thumbdo:

 

[ChefDJ]

You're telling me... I told them to get shoved.

 

[Legacy]

Actually you can change the battery in the diamond keys, you just need to do some google'ing.

 

[ChefDJ]

Google always has the answer raise:

 

[DMV]

I have the same problem and you need to acquire a new key from the dealer. However, if you do a search on you tube you will find a demonstration how to open the key with a Stanley knife and replace the battery and then re seal with super glue

 

[saeedmayat]

thank you

 

[saeedmayat]

will do

 

[ChefDJ]

Any luck?

 

[Ralf*]

I cut open the key on my E39 facelift, then I used an old trick of rubbing the battery vigorously on a hot/warm stove plate, thereby re-energizing the battery a bit...then I meassured the voltage with a voltmeter, ....thereafter I connected a normal AA battery or two (cannot remember the actual amount), in series, thereby in effect giving the battery a bit of a re-charge again

that was 2 to 3 years ago...hasn't missed a bet since then.

coding...youtube is your friend.....some sequence of sitting in the car, pushing the hold open down, series of clicks, doors lock and unlock...and the key is coded....the actual sequence not known now anymore and too lazy to search youtube, but i can tell you its as easy as pie.

the only bad thing is that the plastic holder of the key bears the scars of being opened with a Stanley knife once upon a time.