Three problems related to wiper have been reported for the 2004 BMW Z4. The most recently reported issues are listed below.
Reoccuring issue: -door locks not functioning by remote or central button -wipers not functioning -trunk release not functioning by remote or button -windows not functioning -lighting of interior not working, to include gauge cluster -top not functioning issues intensify on days of low/higher temperatures. Seems to reset by disconnecting battery and reconnecting after several minutes. Issues points to gm5 module being faulty/failing this is not discovered until you start the car, seems to be a random occurrence, but happens at least once weekly. Sometimes it is multiple times a day.
Gm5 module fail. When the gm5 module fauls windshield wipers won't work (this could be a big problem if it rains!), interior lights won't work, windows won't go up or down, no alarm functions and of course no automatic door lock control (doors can manually be locked and unlocked as long as the double lock is open. ).
Driver side mirror fell off and hanged by electrical wires at 65 miles per hour on the freeway. Side mirror wobbles while driving and make judgement difficult. Poor workmanship, design or assembly is probably the cause.
| Wiper problems | |
| Visibility problems |