Antitheft/Keyless Entry - Remote Inoperative
Cayenne5/03 9666
Binder - 9, Electrics
Remote Control For Central Locking System Not
Functioning - Engine Shutdown Not Possible
Vehicle Type:
Cayenne S / Cayenne Turbo
Model Year:
As of '03 (3)
Equipment:
Central Locking System (I No. 4K0, 4K3)
or
Porsche Entry & Drive (I No. 4F2, 4F6)
Concerns:
Kessy control unit/immobilizer complaint:
- Radio remote control for central locking system not functioning, although the battery of the remote control is ok (vehicle has "Central locking system" feature),
- Engine shutdown not possible (vehicle has "Entry & Drive" feature).
Information:
The complaint occurs in the case of "Central locking system" feature: after overloading of the central control unit's communication system due to incorrect data exchange (processor "hangs").
"Entry & Drive" feature: after fast left-right turns (at least two) of the control module in the ignition lock with the engine running. The Kessy control unit/immobilizer interrupts the connection between the ignition lock and terminal 15.
As a remedy, install a new control unit with modified software.
The new Kessy control unit/immobilizer must be programmed with the Porsche System Tester 2 and the software 16.2 (or higher); refer to the Cayenne Technical Manual, Group 9, Chapter 9-18 - Removing and installing the control unit for Kessy/immobilizer.
Parts Information:
References:
Cayenne Technical Manual, Group 9:
> Repairs: 96-18 - Removing and installing the control unit for Kessy/immobilizer
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