A68B Microswitch, roof shell 2 closed, left

Jordan35i

New member
Hello Z4 forum! Owner of a new (to me) 2011 Z4 35i, with 115,000 or so miles. Recently I had a drive with the top down. When I pulled up to my driveway and tried to put it back up, it got about 3/4's of the way, stopped and bonged at me. It also locked me out of my trunk, and I couldn't raise the windows. Red light on the roof button was flashing as well.

Read the error code, and it was A68B.
After taking a look (at this point, roof was maneuverable / accessible by hand), I noticed a very small speaker sized wire that had snapped. After touching the wires together, I noticed that I could move the roof again. I twisted the wires together and wrapped in electrical tape, and was able to get the roof to close.

As soon as it closed, I was able to move my windows again. I took it for a drive, and as soon as I hit above 30km/h, the car started bonging again, and wouldn't stop till under. Stopped, and noticed the roof wouldn't move again. Scanned, and got the same A68B.

I figure my likely bad attempt at "fixing" the wire wasn't good enough. The problem is I cannot get the roof into position to take another look. I've tried turning the front screw on the hydraulic pump .5 turns, I've tried using ProTools to force movement of the roof, but I can't get the rear portion up to check the wire. Is there any way for me to do it, or will I have to take it to a dealer or an indy?

Sorry for the long first post, but I love using my top and want to fix it.
 
Just follow this video. Note Pin 7 & 20 are for the left microswitch and pin 10 and 23 are for the right (good) microswitch. Great video but crappy repair. You need to replace a longer section of wiring.

https://www.youtube.com/watch?v=3q52HtkK6mU
 
He shorted 2 brown wires, so it must be pin 7 and 10.

Remember to put the hydraulic screws back to their original position.
 

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  • Convertible top Schematic annotated.jpg
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Replace the length of wire with wire made for high flex applications. This is the wire I used, since it was readily available in the USA. It's a 2 conductor cable, so it will replace both wires on a sensor.

Chainflex® control cable CF9.05.02 (2 wires 0.5mm2)
 
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