1995 750il

[nomadikdragon87]

hey i unplugged my battery to put some tail lights in, and when i plugged the battery back in now the car will not turn on!!! can anyone help me please? also my backup lights won't come on either which is why i tried unplugging the battery. any help would be nice!

[AquilaBMW]

hey i unplugged my battery to put some tail lights in, and when i plugged the battery back in now the car will not turn on!!! can anyone help me please? also my backup lights won't come on either which is why i tried unplugging the battery. any help would be nice!

A little more details. Do you have dual batteries? When you say will not turn on - no power at all? Or just won't crank over or fire up? Did you tighten the terminals on properly? And not hand tighten...

[coleshooter]

Also, do a voltage test at the battery and let us know what it's at.

[AquilaBMW]

Also, do a voltage test at the battery and let us know what it's at.

Very true... anything under 12v+ on that M73 monster and she won't fire up. Ask me how I know..... :rolleyes

[KGB7]

Very true... anything under 12v+ on that M73 monster and she won't fire up. Ask me how I know..... :rolleyes

I have to ask. How do you know?!?!

Lol

[AquilaBMW]

I have to ask. How do you know?!?!

Lol

LOL!!!!:lol:lol:lol Smarta**

I once had a 750 that would eat it's way through batteries till I fixed the alternator and got new batteries installed.

[Edwin NL]

It's a 95, only has one battery 10-98 and up have dual setup (E-Cat system)

Put the old tail lights back and try again, did you knock the big 40amp fuse in the right rear just behind the tail light?

[nomadikdragon87]

is it possible that i triggered the immobilizer? if so how then can i fix this. i just recently bought the car, private owner, and no owners manual. i feel lost as i have never had issues like this before. the terminal is tight(ratcheted). i saw fuses near the battery but not near the tail light and not 40 either. i will look again for the 40amp. please let me know if it looks different as some fuses are different sizes and it would save time knowing what to look for. thanks!

[Edwin NL]

Get the manual from E38.org

If it cranks it's not the immobilizer

[nomadikdragon87]

the key cylinder is locked so i cant turn anything on let alone try to turn it over.:(

woohoo!!! fixed the backup lights... turns out that the lights i ordered online said they were LED with bulbs included. they only had the blinker bulbs! lol so i took the old bulbs, put them in, and viola, backup lights! so now my issue is that the dash still says "check brake lights" even though all lights now work. so guys, any advice???:help

[nomadikdragon87]

thanks guys!
:buttrock