BMW E70 no power to most of the car

I take it the battery is in good health. This seems to be an ignition switch issue. Have you pulled a wiring diagram on the circuit?Any power down at the DLC?

Hi Tamiyal, thanks for your reply, Battery is good, the DLC has power but not too much information can be retrieved simply because there are no ignition lights. Thanks stuart

...Stuart...Have you tested any fuses?...Dan H. ...South Texas...

HI Dan, all fuses are intact, DME fuses are not energized. Thanks Stu

What does the cas module do when you insert the key? does it "accept " it ( audible clicking ) and lock it in? Does the push button light up at all in the cas? Does the dlc have power supply? I'm going to assume the battery is ok , try to make sure that both fuse panels (front and rear) have good B+ feed to them on the big thick red wire plugged into the panels (im sure they do , but cant hurt…

I agree take a good look at that cas module and also the steering lock.

No steering lock.

Hi Eric, the vehicle steering lock is not engaged. Thanks Again,

Will do, Thanks for your help Daniel. Stu

Hi Sadel, thanks for your reply, sorry if i was a bit vauge, The CAS does not lock the key in but the key is engaged, no click, the vehicle is more or less dead. Battery in good shape, i have tried another anyway. The 5 fuses by the DME are intact but not energized. Thanks Stuart

…Stuart...I had a customer come in with a Ford Ranger truck that exhibited a single "clunk" AT the starter each and every time the key was turned to CRANK...sounded JUST like a bad starter...he had already hung one(still clunked)...this thing had a factory LARGE LEAD bat. terminal on the positive post with TWO LARGE RED leads exiting it...one went TO the starter solenoid ON the starter...the…

Thanks a million Dan, ill keep you all updated.

Stuart, don't worry about those 5 fuses in the e-box by the DDE... they are for powering up engine sensors and actuators and self powering of DDE, nothing to do with your current situation of no vehicle power up. If I read your original post correct, you stated that the interior lights work along with hazards and mileage display, this all sounds like a "normal" acting e70 when you open the door…

Many thanks Sadel, i will be back on to it in the morning & keep you all updated. Thanks you for your time. Stuart

Stuart, All of the questions and suggestions so far have been perfect. You had a good sense of what was happening right from the beginning. You stated no KL15? Great question. Now for action to answer the increasing number of questions. Connect an enhanced scan tool and see if the CAS can be accessed for fault and diagnostic values. Can you confirm the terminal status or retrieve a fault that…

Thank you very much Eric, ill look at this now, The vehicle has NBV and all fuses are in good order. The 5 fuses positioned by the DME are intact but not energized, The CAS is showing NBV too. Ill be sure to keep you informed. Thanks Again, Stuart

...Stewart...just thinking a bit outside the box here...try putting your own 12 volts to these 'dead'fuses with a FUSED jumper ...and see what lights up...if they are SUPPOSED to be powered up (but aren't)....POWER them yourself with that fused jumper and see what ya get then...I don't believe any harm could come from doing so (someone tell me if I'm wrong...please)...Dan H. ...again...

Sounds like a good idea. Should anything go wrong...the fuses are in place to protect the circuits.

Tamiyal...only if he uses a fuse in his jumper that is smaller than or equal to the fuse rating he would be supplying jump to...unless he knew WHICH SIDE of the fuse in question was SUPPLIED FROM...Dan H.

So sorry to bother you Eric, at the risk of looking foolish, can you tell me where i would locate the wake up line please? Thanks again, Stuart

There is one at the IBS green and red most likely pin 3 . That's an easy one. The pin 19 of X13376 is the 15WUP origin. About the 5 pack of fuses: disregard them. They will be of no use unless the Terminal control is functioning, i.e. CAS. So, were you able to communicate‽ I apologize for not reading the saga up to this point. Terminal control and 15WUP. That will get you where you want to…

Thanks again for your time Eric, Much appreciated, i will be back to the vehicle tomorrow morning ( in the future haha) and will keep you updated for sure. Thanks a million, Stuart

Any codes for IBS on battery cable

Hi Raul, Thanks very much for your reply. ill let you know shortly. Thanks Stuart

Hey Stuart, I’m with Eric in this one. I’ve seen this symptom on other BMWs. I would check that KL15 wake up signal (15WUP). Easiest place to check that is right at the IBS. Should have 12v. If it’s pulled down, the CAS will never turn on, and as a result, nothing else will either. Almost always it’s the IBS pulling the 12v down. Unplug the IBS and see if the 12v comes back up. If so then it…

Thanks Aaron, ill be sure to check first thing in the morning, Much appreciated, Stuart

Dis you check the BST?

Thanks everyone for your help, eventually got to the bottom of the fault. It was the CAS unit blocking everything. I have certainly learnt a lot and really appreciate your time one and all. I look forward to be able to hopefully help you guys one day. Thanks again, Stuart