Audi A5 owners manual page 204

text version of content this owner's manual page from owners manual to the vehicle Audi A5, year of production 2007:

document_0900452a8179700c.book Seite 202 Donnerstag, 22. März 2007 10:19 10 202 Intelligent technology Replacing tyres Power management On vehicles with four-wheel drive, all four tyres must have the same rolling circumference. Also avoid using tyres with varying tread This system helps to ensure reliable starting depths ⇒page245, “Replacing wheels and tyres”. The power management controls the distribution of elec- Off-roader? trical energy and thus helps to ensure that there is always Your Audi does not have enough ground clearance to be used as an enough power available to start the engine. off-road vehicle. It is therefore best to avoid rough tracks and uneven terrain as much as possible. If a vehicle with a conventional electrical system is left parked for a long time, the battery will gradually lose its charge because certain WARNING electrical equipment (such as the immobiliser) continues to draw current even when the ignition is off. In some cases there may not • Even with four-wheel drive, you should always adjust your be enough power available to start the engine. speed to suit the conditions. Do not let the extra safety provided Your vehicle is equipped with an intelligent power management tempt you into taking any risks when driving – this can cause acci-system to control the distribution of electrical energy. This signifi- dents. cantly improves reliability when starting the engine, and also • The braking ability of yo ur car is limited by the grip of the tyres. prolongs the life of the battery. In this respect, your car is no different from a car without four-The main functions incorporated in the power management system wheel drive. So do not be tempted to drive too fast on icy or slip-are battery diagnosis, residual current management and dynamic pery roads just because the car still has good acceleration in these power management. conditions (accident risk). • On wet roads bear in mind that the front wheels may start to Battery diagnosis “aquaplane” and lose contact with the road if the car is driven too The battery diagnosis function constantly registers the condition of fast. If this should happen, there will be no sudden increase in the battery. Sensors dete ct the battery voltage, battery current and engine speed to warn the driver, as with a fron t-wheel drive car. So battery temperature. This enables the system to calculate the do not drive too fast in the wet: adjust your speed to suit the current power level and charge condition of the battery. conditions (accident risk). Residual current management The residual current management reduces power consumption while the vehicle is parked. It controls the supply of power to the various electrical components while the ignition is switched off. The system takes the battery diagnosis data into consideration. Depending on the power level of the battery, the individual electrical components are switched off one after the other to prevent the battery from losing too much charge and to ensure that the engine can be started reliably.

owners manual Audi A5

owners manual Audi A5 - year of production: 2007 - Audi A5 owners manual EN