Key fob dead

Smartbear · Post by **Smartbear** » Tue Dec 20, 2022 6:48 pm

If the car had a great enough twisting force to pull the windscreen from its bond, i think it would crack before that happened.
Our Yeti screen cracked when i lent on it while attempting to clip a bulkhead trim back into place.
Rob

flybobbie · Post by **flybobbie** » Tue Dec 20, 2022 10:28 pm

I chipped my windshield when i accidentally drop the wiper arm with wiper blade not fitted.

It hit black area so wasn't to noticeable.

flybobbie · Post by **flybobbie** » Thu Dec 22, 2022 7:33 pm

Getting there slowly.
Interior still damp but plugged in the electrical boxes and got instrument panel to light up intermittent, then low battery came up.
So now battery on charge, see what happens tomorrow.

flybobbie · Post by **flybobbie** » Fri Dec 23, 2022 6:28 pm

Charged battery fitted.
Fob in press start, very little happened.
Jabbed fob, press start, jiggle fob, press start, dash lights flashing on off intermittent, car finally submitted and started.
Tried clearing codes same faults came up on cas. One is coil fault on fob reader.
I don't think it's faulty, something wrong cas end.
Left car running several minutes to try warm up cabin.
Then couldn't stop car on the start button, had to stall it to stop.
Then ignition stayed on, had to disconnect battery, couldn't pull key from reader. Later took apart to retrieve key, but found unlike the original reader, 2 springs inside missing?.

Next step is large can of contact cleaner that has just been acquired.

The saga continues.

Pondrew · Post by **Pondrew** » Fri Dec 23, 2022 7:08 pm

You've got more patience than me. I would had called WBAC a long while back, or taken a sledge hammer to it and claimed on insurance.

flybobbie · Post by **flybobbie** » Fri Dec 23, 2022 7:52 pm

Pondrew wrote: ↑Fri Dec 23, 2022 7:08 pm You've got more patience than me. I would had called WBAC a long while back, or taken a sledge hammer to it and claimed on insurance.

It's getting close.

flybobbie · Post by **flybobbie** » Sun Dec 25, 2022 5:15 pm

Well got it running reliable today.
Problem with contact cleaner, it chills the parts you are trying to clean and dry, like a freezing spray. Then condensation reforms because parts are so cold.
So got my mini camper van heater going with some hoover pipe and warmed the area up to drive off the moisture.
Still not 100% happy, the key fob seems to get stuck in the reader, needs a good yank to get it out.
Something there not right.

So what was wrong, not quite sure.
OBD did keep coming up with fob reader faults, hall sensor reader, start stop button and sense coil, up to 5 errors at a time.
Then a raft of errors after unplugging cas and reinstall, all cleared.
To get started i had to press the start button 10 times or more.
Car would run for a second then cut.
Seem like the system was relearning or something.
Then fired up and ran normal.

Pondrew · Post by **Pondrew** » Tue Dec 27, 2022 12:14 am

https://www.screwfix.com/p/magnusson-ca ... -3kg/9151v

flybobbie · Post by **flybobbie** » Tue Dec 27, 2022 9:13 am

Going to Screwfix shortly.
Although the car is now running, a warning keeps coming up "Start failure", when it starts no problem.
Still the same codes from fob slot.
If it persists, my car is still due the cable callbacks (is that the problem?).
Will take it to BMW, they can get the blame for the problem and sort it

flybobbie · Post by **flybobbie** » Thu Dec 29, 2022 6:25 pm

This came up when fault first occurred.

: 20221127_091502.jpg (103.15 KiB) Viewed 558 times

Strange today my spare key wouldn't lock the car, but the regular no problem.
I might try fitting the new battery and case to the little used key.

flybobbie · Post by **flybobbie** » Sat Dec 31, 2022 6:26 pm

Good job hardware stores are closed tomorrow. (Sledge hammer looks like a cheap solution

).

So jump in car, start, smell burning, ign. off. Now what.

So strip back all the under dash trim and anything after market regards lighting i fitted, can't see anything burnt.
Smell the modules nothing.
Now have restraint system fault that won't clear.
Car now won't restart.

Checked battery through obd, showing only 44% charge, 98% 2 days ago after charge.
So on charge 3 hours, back in car as i need to lock it, starts no problem.
Run for 5 minutes, stop engine, try to restart, dead, no crank.

Makes me wonder if some relay is the problem or the 6 month old battery is faulty. Funny how it starts on a freshly charge battery or is disconnecting the battery resetting something?

Smartbear · Post by **Smartbear** » Sat Dec 31, 2022 8:02 pm

Try using a current clamp to measure the battery drain when the car’s turned off, sounds like you have a parasitic drain somewhere.
Rob

flybobbie · Post by **flybobbie** » Sat Dec 31, 2022 9:04 pm

Well after the 3-4 minute engine run today i touched the alternator, was quite hot. But there again close to the oil cooler.
Voltage out is normal though, initially battery 12.2, alternator kicks in 14.2 or just over volts.

Next plan, go see local breaker on Tuesday see if i can get HID ballast and a few relays to play with.
If i find it's a relay i will invest in new relay.

flybobbie · Post by **flybobbie** » Sat Dec 31, 2022 9:26 pm

Or IBS might be doing something to battery, not allowing it to take a charge. Can try disconnecting, or try re-registering the battery.

flybobbie · Post by **flybobbie** » Sun Jan 01, 2023 4:17 pm

Well a blue relay under the junction box is faulty.
Apply power, no clicking.
Is this the illusive supply for Terminal R, coming up as a fault code.
Would appear to be Valvetronic relay.

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