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Home >> Porsche >> 2012 >> Cayenne Turbo >> Repair and Diagnosis >> Engine Mechanical >> Starter >> 27 - Starter, Power Supply, Cruise Control (4.8L Turbo) -- 92A - Cayenne (92A) >> WM, 278515 Adjusting Distance Measuring Sensor Control Unit >> Preliminary Work >> Test Prerequisites

Test Prerequisites

  1. The tread depth on one axle must not differ by more than 2 mm.
  2. Air pressure of tires in accordance with regulations (regardless of "Comfort" or "Normal" air pressure).
  3. As with complete suspension alignment, make sure that there is no sliding base or turnplate at the end stop during alignment.
    1. 3.1  Take the track width and wheel base into consideration.
  4. Check that vehicle weight corresponds to empty weight. Weight of the vehicle ready for driving (completely full fuel tank and water tank for the windscreen washer/headlight cleaning system, spare wheel, tool kit, jack) without driver.
  5. Spare wheel, tool kit, jack must be located at the positions specified by the vehicle manufacturer.
  6. Vehicle aligned correctly, having been bounced and allowed to settle multiple times.
  7. Check wheel suspension, steering and steering linkage for play and damage.
    1. 7.1  Carry out repairs if necessary.
  8. Adjust vehicles with levelling system (air spring) to normal level*.
    1. 8.1  *Information: Engine/ignition off, doors closed, lock the vehicle.
    2. 8.2  Wait for 15 seconds (air spring corrects vehicle).
    3. 8.3  Unlock vehicle, open door and leave open during measurement, switch on ignition.
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