4X00IN02 Tests/Notes For Four-Wheel Drive

WM 4X00IN Tests/notes for four-wheel drive

Information

Balancing wheels on vehicle

Electronic fine balancing (static balancing) of the wheels on the vehicle (after stationary balancing) is not necessary. Fine balancing is generally permitted. The operating instructions and balancing machine manufacturer's instructions must be observed.

Performance test

Performance tests on roller-type test stands are not approved by Porsche.

Brake test

Brake tests may only be carried out in the road driving programme (High Range) on single-axle roller-type test stands with four-wheel drive function. Requirements:

Transmission in neutral during test (before starting the rollers).

The following limit values must not be exceeded:

Test speed: max. 7.5 km/h.

Test duration: max. 20 seconds.

Observe specifications in the operating instructions provided by the relevant manufacturer of the axle roller-type test stand.

Parking brake test

The foot-operated parking brake may only be tested on the roller brake tester with the ignition switched off and selector lever position N selected.

Towing Tiptronic vehicles

WARNING

No power assistance for the towed vehicle when the engine is not running.

- A lot more force has to be used when braking and steering.

-> Always tow with extreme caution, and at low speeds. Observe the Driver's Manual.

Information

- There is insufficient transmission lubrication when the engine is not running.

Select position N.

Switch ignition on (otherwise steering lock will engage and brake light and indicator light won't function).

Do not exceed top speed of 50 km/h.

Maximum towing distance 50 km.

If, owing to circumstances, vehicle has to be towed with raised axle, the cardan shaft of the axle whose wheels are turning must be removed.

In the case of long towing distances, vehicle must be transported on a trailer.