Convertible Top Hydraulic Circuit Components - BMW 1 Series Reference Manual

Convertible Top Hydraulic Circuit Components

The convertible top hydraulic control unit consists of the electric motor with hydraulic
pump, fluid reservoir, valve block and relays. The hydraulic control unit powers all the
movements of the convertible top using 3 cylinder pairs.
Each cylinder pair controls either:
• the convertible top main pillars
• the convertible top roll bar
• the top storage compartment cover or (lid).
Index
1
Hydraulic control unit
2
Cylinder pair for the main pillars
34
E88 Complete Vehicle
Explanation Index Explanation
Cylinder pair for the top storage
3
compartment lid
4
Cylinder pair for the roll bar