Lim ited driving pro gram T o wing · If an electric or electronic fault occurs whe

911 Transmission 3 Lim ited driving pro gram T o wing If an electric or electronic fault occurs when Sufficient lubrication of the transmission the Tiptronic drive system is in use, the Tip- cannot be ensured if the engine is not run- tronic control unit deactivates automatically ning. The following points must, therefore, be and switches to a limited driving program observed: depending on the type of fault. 1. Move selector lever to "N" 2. Maximum speed: 50 km/h (30 mph) 3. Maximum towing distance: 50 km (30 miles)Effect: 4. With greater towing distances, the vehicle ? Initially, the last gear selected remains must be transported on a trailer. Owing engaged. to the four-wheel drive, the vehicle must not be raised at its rear axle. ? The modulating pressure and shifting pressure increase to the maximum value. S electo r lever lo ck ? The torque converter lockup clutch is At speeds over 10 km/h (6 mph), an R/P lock deactivated. is activated to prevent the selector lever be- ing moved to "R" or "P" inadvertently while the Is the engine switched off and restarted after vehicle is being driven. an interval of approx. 10 seconds, the 2nd gear is engaged. The reverse gear is also Functional description available. The instrument cluster displays "Emergency running". The following always applies: It is absolutely safe to continue driving the vehicle for any distance in the limited driving program even if the electronic link between the Tiptronic control and the transmission is no longer functioning. T o w-starting The vehicle cannot be tow-started and no attempt should be made to do so, otherwise considerable damage could be caused to the transmission. 3_02_00 1 – Selector shaft 2 – Lever 3 – Cam 4 – Supporting lever 5 – Operating solenoid The operating solenoid (5) is actuated by the Tiptronic control unit and moves the lever (2) towards the cam (3) so that the selector shaft (1) is locked. When the solenoid is de- energised, the supporting lever (4) holds the lever (2) in position so that it does not en- gage in the case of severe vibrations. 2002 Service Information 3 -11