Inspect the micro switches.
Bmw z3 electric roof micro switch.
Genuine bmw z3 electric roof switch.
The micro switch on the door or the bonnet will be the most likely cause of this problem.
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Operate the switch manually a few times then try the electric roof.
The roof is known for leaking where it connects with the front window.
Can anyone comment on this please.
Every time you press the convertible switch you should read between 11 13 volts at the pump.
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There are between 4 and 10 micro switches installed in your convertible required to run your top.
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You have to push the roof slightly open to activate the electrics and that opens this switch.
The most likely cause is the small micro switch located near the top fold on the left side.
If so the z3 has known issues with faulty micro switches.
Try a good squirt with some electrical cleaner first covering the area around with a cloth.
I have an electric hood switch in my 97 z3 2 8 roadster but the manual only mentions manual hood operation and the hood is manual.
Many thanx thanx kindly for all the replies the switch is in the front centre console it is a very late 2 8 built july 97 and not an m i will look in the boot for the motor.
Bmw z3 hood micro switch replacement article submitted by g8jka after having intermittent problems with the electric roof on my zed and identifying the problem to be a faulty microswitch i decided i would finally cure the problem and replace the switch.