90 80 On-board computer: 91 20 Radio: · Disconnectionof the vehicle battery deletes the The radio reverts to t

911 Carrera (996) Starter, power supply, cruise control 90 80 On-board computer: 91 20 Radio: Disconnectionof the vehicle battery deletes the The radio reverts to the Code function when the memories for average speed and average battery is disconnectedand is thus no longer consumption. ready for operation. As a result, the displayed range on remaining fuel can be markedlydifferentor evenO. Remedy: The outside temperature indicator loses its Inputthe radio code. If the code card is memory effect. In other words, the indicated unavailable,the radio code can be read from the outside temperature can be too high due to the DMEcontrol module(under'Vehicledata"),The heatradiatedwhenthe vehicleis hot. code is also availablefrom the Porsche IPAS. 90 23 Fuel level display: 91 10 PCM: Only 911 Carrera 4 (996) and GT3 are 1. The PCM reverts to the Code input function affected: when the battery is disconnected and is thus If the power supply is interrupted by a no longer ready for operation. discharged or disconnected battery with the tank containing less than 19 I, the calculated 2. Whenthe power supply is disconnected,the value for the range on remainingfuel in the built~nGPSreceiver loses the so-called instrumentcluster will be incorrect or deleted. "almanac"containingthe satellite orbital paths. If the tank contains less than 10 I, it is possible 3. The date and time are deleted when the that the fuel level warning light is no longer battery is disconnected. activated. 4. Radio stations stored by the customer are no If the power supply is restored with the fuel level longer displayed. at less than 19 I, it is possible that the fuel levelldiSPlay may subsequently display too 5. If the telephonecard was insertedandthe much in some 996 Carrera 4 and GT3 telephonewas ready for operation, the vehicles. telephone is subsequentlydisabled. This may lead to the vehicle breaking down. Remedy: 1. Inputthe PCM code. If the code card is Remedy in these vehicles: unavailable,the PCMcode can also be read from the DMEcontrol module(under 'VehicleRefill at least 19 I of fuel; then the fuel level data"). This code is also availablefrom thesensor is in operating range and its display Porsche IPAS.precision is guaranteed. Note: 911 Carrera (996) Technical Manual, Group 2, TI. No. 9/99. 27 06 Work instructions after disconnecting the battery 27 -23 Printed in Germany -33, 1999 9962721