Fault code A689 ???? Help

P

peter2704

Member
So opened the boot to put my work boots in and started the car, only to be met with bong and roof down switch flashing .just read the codes and have a A689 roof erect hall sensor ?? What, where , why ? And how do I fix it ?
 
Error codes A689 and A693 indicate Hall sensor and microswitch faults in the roof pack system
 
If you have a search on here there are lots of guides around how to replace the hall sensors

If you aren’t handy with the Spanners then reach out to a garage who will have a go at roof sensors
 
If it’s the two micro switches they sit on the roof mech, drivers side

There are two ans they fail over time
 
Am I correct in thinking A68a/b/c/d are the roof shell switches where is A689 it must have a location ,anyone know where it’s located been searching on here but no luck
 
peter2704 said:
Am I correct in thinking A68a/b/c/d are the roof shell switches where is A689 it must have a location ,anyone know where it’s located been searching on here but no luck
Click to expand...

There are some good guides on youtube.
There are wires in the arms and microswitches there which break. Sometimes the wiring is broken there and needs replacing.

Realoem will have all the position sensors and switches on their diagrams.

You can usually pinpoint which part in the sequence it fails by operating it and see which point it fails at. Then you will know what to look for location wise with the realoem parts diagrams.

It’s quite a bit of work to fix yourself, research and manual but there is lots of info on youtube and here.

It can be as simple as a broken microswitch, which BMW can replace for about £300. Might be a bit more with the recent inflation hikes.

If you like getting stuck in and can do electrics, give it a shot.
 
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Cheers , my roof doesn’t move at all it’s in the up normal position and has been like that for weeks ,as mentioned I haven’t moved the roof just open the boot normally to put my work gear in and then bong
A689 must be a certain hall sensor I just don’t know its location
 
Peter

Use the search function to see the location of the two hall sensors you need to check/replace

They are located on the mechanism of the rear opening boot lid on the drivers side of the car

There is also a guide telling you what sensors to buy, how to rewire them and how to access them

Where are you based
 
A

Thread 'Roof Micro Switches and Hall Sensors - Fixes and info'

Gent thanks to WLH a moderator here, below is a link to my original post which I re did after PB started playing silly buggers ,and WLH kindly hosted on another web hosting site , you should get all the details including the images which are missing below from this new link . If I get any further info to post I will add it to this PDF .



Big thanks to WLH for helping with this .


Original posting below , but WITHOUT image , click the PDF link above to get everything I originally posted ...
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Cheers for that should help , do got into the boot area can I unplug and link out the switches and hall sensors one at a time to help find issue
 
Just replace them both they are £12 plus vat (if you get the e88 ones recommended) from bmw
 
Ok so progress found a crao plug connection so reconnected and A689 fault gone but now have A692 micro switch rear end module closed fault
 
Where is the A692 switch I have look for videos but no longer there has anyone got any picks , should it be closed when the roof up or open when roof up
 
Found using the search function:

Covers microswitch issues and how to sort

RobbiZ4

Thread '⌛ E89: Collection of the typical age-related defects in the roof environment'

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Maintained in the German ZRoadster forum:

⌛ ------- Z4 E89 FAQ und Empfehlungsliste - My Recommendations ☕

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⌛ ------- Z4 E89 FAQ und Empfehlungsliste - My Recommendations ☕

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05.01.2026
Due to it's age, the following faults/signs of wear in the roof area of our Z4 E89 will come up:
  1. Salmon-colored relays
    Wearing internal(!) switching contacts on...
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Thanks for that and helping me out but I must be dumb I can’t see where is shows where or how to replace or check the A692 switch unless I’m missing something feel I am close to curing the issue
 
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