[Bimmerboy41409]

Car suddenly went into a no crank/no start condition after battery/jump start issues. The car still has partial power:

• radio works
• windows/sunroof work
• exterior lights work

But:

• no crank at all
• steering stays stiff/locked
• gear selector doesn’t respond normally
• spoiler is stuck
• multiple warnings on cluster (restraint, brake, fuel system, drivetrain, etc.)
• hearing clicking sometimes

[Ragnar The Redneck]

Can you pull the codes? What is the battery voltage? Also, explain in more detail the "jump start issues". Did something get connected wrong? It almost sounds like a relay problem.

[Bimmerboy41409]

Originally Posted by Ragnar The Redneck

Can you pull the codes? What is the battery voltage? Also, explain in more detail the "jump start issues". Did something get connected wrong? It almost sounds like a relay problem.

I got it scanned using the x431 tool , a have a bunch of reports I can post .

[Ragnar The Redneck]

Terminal 30F is part of the FEM and operation of the vehicle.

Again, what are the codes, what is the battery voltage, explain "jump start issues". Also, what is the condition of the battery?

A new battery may fix the symptoms of the problem, but without proper diagnosis the problem will reoccur in time.

[Bimmerboy41409]

I inserted a new battery and nothing has changed. The car was jumped backwards meaning my gf put black on red and red on black , every since then my car has not been able to crank or start. Radio works , sun roof works but car is not drivable .

[Bimmerboy41409]

Does this look like a fried module or improper power management? Also , I have a diagnostic setup tomrrow at my local bmw dealership

[Ragnar The Redneck]

Originally Posted by Bimmerboy41409

The car was jumped backwards meaning my gf put black on red and red on black

This. This was the single MOST important information given and should have been said in the original post.

Now, were the jumper cables connected directly to the battery or to the jump point terminal, which is terminal 30F, and ground?

Anyway, there is a fuse inside, and I would guess it is large, specialty fuse. I do not know if this fuse is replaceable. The part diagram makes it look like it could be, but the manual says that there are different terminals for the GT. This fuse is between the positive from the battery and the starter motor and alternator. This would explain the no start situation when everything else seems to work.

I cannot find a part number for this, but it should be on the jump point terminal somewhere.

[Bimmerboy41409]

Originally Posted by Ragnar The Redneck

This. This was the single MOST important information given and should have been said in the original post.

Now, were the jumper cables connected directly to the battery or to the jump point terminal, which is terminal 30F, and ground?

Anyway, there is a fuse inside, and I would guess it is large, specialty fuse. I do not know if this fuse is replaceable. The part diagram makes it look like it could be, but the manual says that there are different terminals for the GT. This fuse is between the positive from the battery and the starter motor and alternator. This would explain the no start situation when everything else seems to work.

I cannot find a part number for this, but it should be on the jump point terminal somewhere.

Can you show me where , based on the photo I attached?

[Ragnar The Redneck]

The jump point terminal is under the hood, not the battery location in the cargo area. It will have a red cover with a "+" on it. It is much easier to get to than trying to reach the battery. There is not a dedicated negative "-" post under the hood, as any unpainted/uncovered body/chassis/bolt/nut/engine block/turbo can be used as the ground.

[Bimmerboy41409]

Originally Posted by Ragnar The Redneck

The jump point terminal is under the hood, not the battery location in the cargo area. It will have a red cover with a "+" on it. It is much easier to get to than trying to reach the battery. There is not a dedicated negative "-" post under the hood, as any unpainted/uncovered body/chassis/bolt/nut/engine block/turbo can be used as the ground.

Found it!!! What should I do next ?

[Ragnar The Redneck]

Looks a little different than on my GT, possibly due to engine differences. No matter. Make sure the battery has been disconnected first. Look for the cable coming from the battery and the cable going from the terminal to the starter, alternator, etc. You will want to test continuity between these cables. This will tell you if the fuse has blown; if you have continuity, the fuse is good, if not, it is bad. The part number should be located somewhere on the part.