Fault code 1024: Diagnosis/troubleshooting

WARNING: This page is about a different car, the 2006 Porsche Cayenne, 2005 Porsche Cayenne, 2004 Porsche Cayenne, and 2003 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSIS TROUBLESHOOTING PROCEDURE

Work instruction			Display OK	If not OK
1	Check coding	Connect the Porsche System Tester II No. 9588 and switch on the ignition. Read out coding using the Tester in accordance with the vehicle equipment with or without automatic light switch function (see Control module function (coding/programming) ).	Go to Step 2	Code the control module (wiper motor) in accordance with the vehicle equipment (see Control module function (coding/programming) ) → End
2	Check windscreen/ rain sensor assignment	Look for the part number of the rain sensor (on component) Determine the windscreen type (heat insulation glass or insulating glass) Check assignment in accordance with Spare Parts Catalogue "PET"	Go to Step 3	Install suitable rain sensor/ light sensor → End
3	Check windscreen and silicone cushion for faults and soiling	Carry out a visual inspection to see if there are any cracks, chips or soiling on the windscreen or on the silicone cushion in the area of the rain/light sensor	Go to Step 4	Repair damage or clean any soiling → End
4	Check the power supply of the rain sensor/light sensor	Check voltage between pin 1 and pin 2 of rain/light sensor plug	Voltage is 11.4 to 14.5V Go to Step 5	Establish power supply: repair line or replace wiring harness → End
5	Replace rain sensor		→ End