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For various tasks, it is necessary to unlock and lock the parking lock.

This can be done from inside the passenger compartment or underneath the vehicle.

Before unlocking the parking lock, secure the vehicle against rolling away.

In the event of a power supply interruption, e.g. flat battery or electrical fault, the parking lock must be manually released, otherwise the wheels will be locked and the vehicle cannot be moved.

Manual emergency release of parking lock from passenger compartment is not possible with GA6HP/GA8HP gearboxes from 03/2010:

The Bowden cable for unlocking the transmission can be omitted for E70 /71 as of production date 04 / 2010.

Before removing the underbody panel, always check inside the vehicle to be certain the parking lock emergency release is not fitted.

From the vehicle underbody:

Raise vehicle.

Manual emergency release of parking lock Graphic shows: GA6HP gearbox.

Remove underbody protection

Screw in screw (1) with hexagon socket (SW5) until parking lock is released by lever (2).

Then unscrew and remove screw (1).

Screw (1) should protrude 1.5 to 2.5 mm above thread lip (A).

From the vehicle underbody:

Raise vehicle.

Manual emergency release of parking lock Illustration shows GA8HP transmission.

Remove underbody protection

Screw in bolt (1) with hexagon socket (SW5) until parking lock is released by lever

(2).

It is imperative that bolt is always replaced.

Clean thread with screw tap size M6X1,0.

Screw new micro-encapsulated screw (1) into thread.Important!

Screwing in and adjusting of screw to 1.5 to 2.5 mm above thread lip (A) must occur within 3 minutes.

The screw may no longer be turned after 3 minutes (hardening of adhesive), otherwise it must be replaced.

From passenger compartment:

Refer to Manual emergency unlocking of parking lock.

From underneath vehicle with Bowden cable:

Illustration shows GA6HP transmission.

Remove underbody protection.

Press lever (1) towards rear.

Clamp lever firmly if permanently unlocking is desired.

Locking:

Release lever (1) or release clamping