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Cayenne

2009-2012 Cayman – Manual

2009-2012 Cayman – Manual

Page: 240

Battery care

  • Ensure that battery is securely mounted.
  • Keep terminals and connections clean and properly tightened.
    Corrosion can be prevented by coating the terminals and connections with petroleum jelly or silicone spray.
  • Ensure that vent caps are securely tightened to prevent spillage.

Checking the electrolyte fluid level

  • The acid level should be checked more frequently by a qualified specialist workshop during the summer months and in predominantly warm countries.

Battery charging
Automotive batteries loose their efficiency when not in use.

The charge available in your battery can be measured with a battery hydrometer.

We recommend that the battery voltage be tested by your authorized Porsche dealer who has the appropriate equipment.

If the car is not driven for prolonged periods, the battery must be charged at least every 6 weeks.

A discharged battery allows rapid formation of sulfates, leading to premature deterioration of the plates.



Hydrogen gas generated by the battery could cause an explosion, resulting in serious personal injury or death.

  • Charge battery in a well ventilated area.
  • Never charge a frozen battery. It may explode because of gas trapped in the ice. Allow a frozen battery to thaw out first.
  • If you get electrolyte, which is an acid, in your eyes or on your skin, immediately rinse with cold water for several minutes and call a doctor.

Slow battery charging
Your authorized Porsche dealer will be pleased to advise you about a suitable charger.

  1. Always observe the instructions of the charger manufacturer.
    Depending on the type of charger, the battery may have to be disconnected.
    In this case, always disconnect the negative lead first, and then the positive lead – risk of short circuit!.
    Reconnect the leads in reverse order.
  2. Before charging, cold batteries must be warmed up indoors.
  3. Frozen batteries must be thawed out first before being charged.
  4. When charging, ensure that there is adequate ventilation.
  5. Connect the charger to the battery.
    Only plug into the mains and switch the charger on when it is connected up correctly.
  6. Switch on the charger.
  7. After charging, switch off the charger first and then disconnect it.
  8. Please see the chapter "PUTTING VEHICLE INTO OPERATION" on page 241.
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