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

Test Prerequisites

  1. The tread depth on one axle must not differ by more than 2 mm.
  2. Tyre pressure o: tyres 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 toe width and wheel base into consideration.
  4. Check that vehicle weight corresponds to empty weight. Weight of the vehicle ready for drying (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 in 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 the measurement, switch on ignition
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