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Home >> BMW >> 2009 >> 135i 2D Convertible, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 1711 (Convertible Top - Repair - E93) >> Motor Operated Convertible Top >> 54 34... Repair instructions for hydraulic system of convertible top and convertible top compartment lid >> Definitions of terms

Definitions of terms

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Hydraulic system at zero pressure
or
Untensioned state:
  • Turn ignition lock to "0" position.
  • E46c: Wait 15 seconds

    E52: Wait 2 minutes

    E85: Emergency operation or wait 2 minutes

    E64/F12: Wait 5 seconds

  • E88/E93: Wait 10 minutes
Hydraulic system has no or only very low pressure
Mechanical operation:
Emergency operation:
  • Soft top is opened or closed by hand
  • Always move soft top with aid of a second person
Observe Point 3
Closed system:
  • All lines are connected
Even "short circuiting" of lines is possible
Function check:
  • Open and close soft top several times (min. 3 times)
  • Check fluid level in hydraulic unit; if necessary, top up fluid
Refer to Operating Instructions
Short circuit (E46c only):
  • Unfastening of quick-release couplings
  • Connection of supply and return lines
Hydraulic system cannot build up pressure
Soft top can be moved
Function check:
  • Checking of soft top function if possible on removed soft top
Soft top must be secured!
Move 2-3 times
Soft top stowed:
  • Soft top fully open (folded together)
When the soft top is installed, it is in the closed soft top compartment