[Kasgar]

Hey guys, I can't find any solution no matter how hard I've looked on the forums or anything.
So my car has been on the lift for a while, I've been working on it when I can, brakes, suspension, some general maintenance. Anyways after all this time not fired up the battery died from the constant use of the lights. I didn't throw it on a trickle charger for whatever reason but it's too late.

I got to a point where I could finally get the car started again so I needed to charge the battery, after getting it charged enough to start I noticed none of my cluster lights, or the gauges are not working. Figured I blew a fuse, checked the fuse, it's fine, changed it out anyways, unplugged the battery for 30 minutes, started her up again and still have no power on dash except for the cluster lights are all on. And they don't turn off either, key out of ignition, accessory power off, lights still on. Car will start up every time but the dash and the lights aren't working.

Any ideas?
'07 335i coupe

[itechteam]

You may have blown your FRM, have you check windshield wipers, headlights? Disconnecting the battery is taking a big risk to the FRM, which is a terrible design. You can ship it off to get fixed for like $100 or so.

[Kasgar]

Originally Posted by itechteam

You may have blown your FRM, have you check windshield wipers, headlights? Disconnecting the battery is taking a big risk to the FRM, which is a terrible design. You can ship it off to get fixed for like $100 or so.

Yes headlights and wipers work, but everything that controls the dashboard menu just makes the lights glow a little brighter when they are pushed down and then go back to dim

[itechteam]

Here is another thread discussing FRM issues - https://www.e90post.com/forums/showthread.php?t=1276967

What about windows can you let them down and raise back up?

[Kasgar]

Originally Posted by itechteam

Here is another thread discussing FRM issues - https://www.e90post.com/forums/showthread.php?t=1276967

What about windows can you let them down and raise back up?

Oh this is a strange one, I can roll the windows up and down just fine BUT when I shut the door it doesn't align the window correctly. When it lowers the window down a little so it doesn't smash it, then rolls it up after it's shut? Yea not any more

Also this all stems before unplugging the battery, I tried a jump pack, didn't work, but noticed it didn't show my key in ignition anymore, figured it was a little too dead to car about a key light. So then charged it with the charger, fired up, no lights or gauges. Then unplugged the battery thinking it would do anything different, and it kinda did with the lights staying on now

[Kasgar]

Originally Posted by itechteam

Here is another thread discussing FRM issues - https://www.e90post.com/forums/showthread.php?t=1276967

What about windows can you let them down and raise back up?

Reading that thread I see these FRM issues can be any range of them rather than a cut and dry checklist. I guess it's worth a shot, I mean I don't have any other options at this point. I'll look into what to do and I guess come back here when it's all said and done.

Thanks itechteam I appreciate you trying to point me in a direction

[E93Dude]

Post your fault codes. Problem could be CAS or FRM modules.

[Kasgar]

Originally Posted by E93Dude

Post your fault codes. Problem could be CAS or FRM modules.

Once I get home from work I will, gonna slap the battery on the charger to let it charge all the way and see if it's just funky voltage messing with everything, left it disconnected all night. I didn't think the CAS or FDM control the instrument cluster at all. Everything in the car works other than just the instrument cluster and the automatic window shimmy (whatever that's called lol)

[Kasgar]

Okay! So got home and plugged the battery back in after being unplugged all night (was gonna die if the dash lights stayed on) and wouldn't you know it everything came back to life! Weird electrical gremlins. Everything displays correctly, only thing is the window still isn't doing the automatic adjustment. Maybe if I roll it down all the way and back up it'll reset. Thanks everyone trying to help. I guess don't let your battery die, who knew?

[chris55552]

Originally Posted by Kasgar

Okay! So got home and plugged the battery back in after being unplugged all night (was gonna die if the dash lights stayed on) and wouldn't you know it everything came back to life! Weird electrical gremlins. Everything displays correctly, only thing is the window still isn't doing the automatic adjustment. Maybe if I roll it down all the way and back up it'll reset. Thanks everyone trying to help. I guess don't let your battery die, who knew?

I went through this very thing and I was really ready to pull my hair out and stressed about the cost it might take to resolve it. Turns out it wasnt bad at all and in my case I had a triple whamy going, a quadruple failure kinda like apollo 13 which isnt supposed to happen lol. I replaced my battery because it needed it, still had light and window and cluster issues, replaced my junction box elctronic module under the glove box fuses and finally hit pay dirt when I replaced my footrest module with a new one and coded it back to factory spec. Thats when the gremlins finally retreated. I bought a FRM module off ebay for like 100 bucks and replaced my old one with it but the most important step in the process was coding it back to factory spec just like new with BMW protool app for android, I swear that app has pulled me out of the fire on many occasions and saved my bank account. You just dock into your obd port and run the app and when your control modules come up you will see that the FRM module is responsible for every single thing you had going wrong and you can test, calibrate, reset, activate, default back to factory spec and test each function and customize the function of everything the FRM controls. Its pretty easy and user friendly. You can change how the vehicle behaves, for an example you can program your car to keep the fog lights on with bright lights and customize the lighting, your side mirrors, daytime running lights, headlamp intensity etc and so on. There really are a lot of options and ways to customize it. Great diagnostic tool too, clearing codes, programming new batteries. Ive never tried inpa, or ista, havent needed to due to protool and bimmercode apps.