Bimmerfest - BMW Forums - View Single Post - Z4 Z4 top does not go up all of the way
View Single Post
Old 07-19-2012, 03:52 AM
brock5ga brock5ga is offline
Registered User
Location: Monroe, GA
Join Date: May 2012
Posts: 96
Mein Auto: Z4
Originally Posted by shipkiller View Post
The motor is working but most likely it does not have enough grunt to get the top all the way up.... unless you have a hydraulic piston issue (very unlikely) then the motor it bad.
Have someone grab the top and give it some assist from the moment it starts coming up and see if it will go through full travel. If so, the motor or pump is not strong enough. Some electric motors have an internal circuit breaker that will cut out if the motor draws too much current. Try letting it sit for a few minutes when it quits and see if it will continue, or if you hear the motor try to run for a second. Not sure if these have an internal breaker or not, but you would still replace the motor.
Reply With Quote