54 90... Troubleshooting, Automatic Convertible Top

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 135i, and 2010 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

TROUBLESHOOTING TABLE

Fault	Cause	Movement	Remedy
Convertible top does not open or close	Battery voltage is < 11.5 V	opening and closing	Charge battery or run engine
	Outside temperature too low	opening and closing	Bring outside temperature above -12°C
	Hydraulic pump motor temperature too high	opening and closing	Hydraulic pump motor ≤ 90°C
	Terminal "R" not switched on	opening and closing	Switch on terminal "R", check fuse terminal "R"
	Convertible top not unlocked	opening and closing	Emergency actuation
	Rear lid not closed	opening and closing	Close rear lid.
	Speed > 40 km/h	opening and closing	Slow vehicle down to complete standstill
	Convertible top compartment not completely lowered	opening and closing	Lower convertible top compartment
	Door windows not lowered	Opening	Lower rear side windows completely and front side window slightly
	Fuses defective	opening and closing	Check fuses
	Leads interrupted	opening and closing	Refer to DIAGNOSIS
	Plug connections interrupted	opening and closing	Check plug connections, repair if necessary
	Control unit defective	opening and closing	Refer to DIAGNOSIS
	Hall sensor fault	opening and closing	Refer to DIAGNOSIS