Z4-forum.com

Hi all

Need some advice on my roof.
Car is a 2003 3.0.
Left it covered up for 7 weeks, got back and she started first time. All bits and bobs work except the roof.
No pump whir, no unlock of the roof st the front, no lights on the buttons. Literally nothing.
Had a search around the site and have checked the following so far....
Fuses, all 3 behind the glove box are good.
Rear micro switch, switch clicks normally and both adjusters are in the down position.
Red pull cord, is seated correctly. Pulled out to see if anything happens but still nothing.

Weather down south is 'top down' weather.....

Anyone got any ideas???

Thanks in advance

John

What light indications, if any, are shown? If there is no unlatching or dropping of windows then that suggests no the motor in the first instance. Was the car left on charge?

If it's not unlocking, and you aren't getting the orange light to indicate that the shelf microswitch is open, then it's more than likely a simple power supply issue. Might be worth pulling out the ashtray panel with the switches on it and checking the plug at the back - You don't have a Gap-Tech module fitted by any chance do you, if so could be a faulty connection. Also behind the passenger seat, if you remove the trim, you can access (just) the roof module, again to check plugs.

Mike

I would try disconnecting the battery for 10/15 mins and seeing what happens. If that doesnt sort it your describing the symptoms you get when the roof module detects a fault such as an open circuit in the loom or a sensor etc. In these cases nothing happens and no lights flash. Then only way to find out then what's going on is reading the fault codes.

Thanks for the replies.
In answer....

Literally nothing happens when I press the button, no light, no unlatching, no window drop, no pump noise.....literally nothing happens!

The car was not on charge when stored.

Don't know if I have a gap-tech module or not? How can I tell?

Will disconnect battery next as above, if not will try a trickle charge overnight and check all the connections described above.

Will post up results.

Again, thanks for the help!

John

Does everything else work, I'm wondering if car has gone in to transport mode, I know it affects some of the cars functions but not sure about the roof

markplant wrote: ↑Fri Apr 07, 2017 2:13 pm Does everything else work, I'm wondering if car has gone in to transport mode, I know it affects some of the cars functions but not sure about the roof

Good point! OP - Does tha fan/aircon work properly, ie at full speed? If not, it could well be in "transport mode" if so, it'll need hooking up to the BMW diagnostic kit to deactivate it. Whereabouts are you? I can do this in about 10 mins for you if you are local to WA9, no charge of course.

Mike

Hi all

Thanks for the replies.

I've been away on holiday for 2 weeks, got back...problem still there!!!

AC works, fan goes to full speed and all 3 direction settings work.
Have tested everything else on the car and only the roof doesn't work.

Only thing I haven't tried from the suggestions above is the roof module connections behind the passenger seat....I don't want to break the trim, is there a trick to getting in behind the storage bin area????

Unfortunately, I'm down south in Portsmouth!

Thanks in advance.

John

UPDATE:

Did a bit more digging from the above post and tried to release manually.
Allen key releases the roof from the screen ok.
Red lever in boot put to 90 degrees do it doesn't go all the way back.
Roof moves about a foot backwards then I hit what I assume is hydraulic pressure.
Roof now secured back in place manually.

Rechecked the 3 fuses behind the glove box, all ok.

Still trying to get trim off behind passenger seat with no luck.

Any thoughts????

Anyone near Portsmouth with a diagnostic kit????

John

Please forgive the obvious - have you tried the storage handles in the boot:

Hi rosskins

Yes, the panel is in the lower position.
I also took out the switch unit at the back and checked the wiring which is all intact and in decent condition.
Also checked the micro switch, which clicks decently. I dropped the panel and listened for one click (to check if in the lower position wether it was making the switch then breaking it) and all is good. Then as an added check I manually held the switch and tried the roof....still nothing!

John

without codes and scanner pids its just guessing, but.....

7 weeks + 2 is a looooong time for a battery. poor thing. Sat there neglected.

Anyway, disconnect the battery, give it a good charge (overnight), and try it all again.
Well worth a try.
Andy

John996 wrote: ↑Sat Apr 29, 2017 5:33 pm UPDATE:

Did a bit more digging from the above post and tried to release manually.
Allen key releases the roof from the screen ok.
Red lever in boot put to 90 degrees do it doesn't go all the way back.
Roof moves about a foot backwards then I hit what I assume is hydraulic pressure.
Roof now secured back in place manually.

Rechecked the 3 fuses behind the glove box, all ok.

Still trying to get trim off behind passenger seat with no luck.

Any thoughts????

Anyone near Portsmouth with a diagnostic kit????

John

Then contact Bowser134 based nr Camberley hood mystro and also Snr BMW Technician

Battery fully charged now, took 24 hours.
Still the same problem!

Will contact Bowser134 for advice!

John

If you pulled the red handle in the boot (and latched it 90 degrees so it didn't return to its 'home' position), but had hydraulic resistance when lowering the hood, it sounds like the hydraulic bypass that is supposed to allow the roof to go up and down manually is stuck. This would not give any of the electrical symptoms you described though - you should at least get an unlatching of the hooks or the light should flash orange or red to indicate a fault.
Any easy way to test the switch in front of the gear selector isn't faulty? It's like the car's not even getting the signal to start the roof lowering/raising process.