Changing battery on E46?

[E46..sTyLez]

Hey fellas,

I'm going to be changing out the battery in my 330 after work today. I just want to know from someone that has done it, if there is anything weird about changing the battery in a BMW or if it will be the same as changing it in a Honda? (aside from it being in the trunk)
Anything I should know about it?? Strategies?

Mostly just curious because a local shop wanted $80 to do it...not including the $290.00 battery, so I'm thinking there may be more work involved than I know of.


Thanks,

[Eleanor]

$80 to swap a battery?

It better be defended by a fearsome dragon for that price

bimmerforums.com is your friend

[snowboard]

lol its just annoying pulling apart the trunk "tray" assembly but its pretty easy to do.
like eleanor said, just check bimmerforums, or e46fanatics for a walkthrough.

[lint]

make sure you have your radio code

[E46..sTyLez]

Originally posted by lint
make sure you have your radio code

[03ozwhip]

once you take the battery terminals off your radio wont work without the code. good advice if you want music.

[lint]

Don't the radios in e46s also have a security/radio code that you need to enter to activate it if the power is ever cut off? That's the way it is for e36s, so I'm just assuming it's the same for e46.

[lint]

Originally posted by 03ozwhip
once you take the battery terminals off your radio wont work without the code. good advice if you want music.

Yep. Only after installing my new battery did I realize that the radio code was no where to be found in my car.

[Weapon_R]

I think Walmart still does free battery installs when you purchase a battery from them

[snowboard]

Originally posted by lint
Don't the radios in e46s also have a security/radio code that you need to enter to activate it if the power is ever cut off? That's the way it is for e36s, so I'm just assuming it's the same for e46.

I Replaced my HU with another stock and didnt need a code?
i also disconnected my battery when i did my sub install on stock HU and it never asked for a code?

[E46..sTyLez]

Originally posted by snowboard



I Replaced my HU with another stock and didnt need a code?
i also disconnected my battery when i did my sub install on stock HU and it never asked for a code?

What model BMW was it on?

Thanks,

[Super_Geo]

Where do you get this code?

[E46..sTyLez]

Originally posted by Super_Geo
Where do you get this code?

Just got off the phone with Calgary BMW and they said it will be in the 'Radio' booklet in the owners manual. When I go for lunch I'll check to make sure I have it. If I don't have it they said I can come down with my registration and drivers licence and they will release it to me.

So, other than that...pretty straight forward?

Would you guys disconnect the power connector from under the hood, then disconnect the battery just incase of a short of any kind...?

or just unhook the battery from the get go and leave the power connector hooked up under the hood?

[RATM]

Originally posted by E46..sTyLez


Just got off the phone with Calgary BMW and they said it will be in the 'Radio' booklet in the owners manual. When I go for lunch I'll check to make sure I have it. If I don't have it they said I can come down with my registration and drivers licence and they will release it to me.

So, other than that...pretty straight forward?

Would you guys disconnect the power connector from under the hood, then disconnect the battery just incase of a short of any kind...?

or just unhook the battery from the get go and leave the power connector hooked up under the hood?

either works really, just make sure you have that code!!

[Spatz]

make sure you remove the flex capacitor first!

[hampstor]

Originally posted by Spatz
make sure you remove the flex capacitor first!

What are you talking about?

[Eleanor]

Originally posted by hampstor


What are you talking about?

I think he meant flux capacitor, that should clear that up

[interlude]

I took off both terminals to my battery and left it like that for 4 hours.. plugged everything back in and it was fine, I didnt need a code

2002 M3