Audi A5 owners manual page 205

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 203 Donnerstag, 22. März 2007 10:19 10 Intelligent technology 203 Dynamic power management Please note that certain convenience features, such as the Audi While the vehicle is moving, this function distributes the available advanced key*, the remote control key or the electrical seat adjust- power to the various electrical components and systems according ment may not be available when yo u unlock the vehicle. These func- to their requirements. The power management ensures that on-tions will be restored when you switch on the ignition and start the board systems do not consume more electrical power than the engine. alternator can supply, and thus maintains the maximum possible With the engine switched off battery power level. If you listen to the radio or use the other MMI functions when the engine is not running, this will discharge the battery. Note The MMI display will show this wa rning message before the battery • The power management system is not able to overcome the power drops to a level where the starting ability is impaired. given physical limits. Please remember that the power and life of Please start engine, otherwise system will switch off the battery are limited. in 3 minutes. • A warning message will appear ⇒ page 204, “Driver message in the instrument cluster display” if the battery power has dropped to This message warns you that the system you are using will be a level where reliable starting is impaired. switched off automatically after 3 minutes. You should therefore start the engine if you wish to continue using the system. Points to remember When the engine is running Starting ability has first priority. Although the alternator generates electrical power, the battery can still become discharged while the vehicle is being driven. This can Short trips, city traffic and low temperatures all place a heavy load occur when a lot of power is being consumed but only a small on the battery. In these conditions a large amount of power is amount supplied, especially if the battery is not fully charged consumed, but only a small amount is supplied. The situation is also initially. critical if electrical equipment is in use when the engine is not To restore the necessary energy balance, the system will then running. In this case power is consumed when none is being gener-temporarily shut off the electrical components that are using a lot ated. of power, or reduce the current they are consuming. Heating In these situations you will be aware that the power management systems in particular use a large amount of electrical power. If you system is intervening to control the distribution of electrical power.notice, for instance, that the seat heating* or the rear window heater is not working, they may have been temporarily switched off When the vehicle is parked for long periods or regulated to a lower heat output. These systems will be available If you do not drive your vehicle for a period of several days or weeks, again as soon as sufficient electrical power is available. the power management will gradually shut off the on-board You may also notice that the engine runs at a slightly faster idling systems one by one, or reduce the amount of current they are using. speed. This is quite normal, and no cause for concern. The increased This limits the amount of power consumed and helps to ensure reli-idling speed allows the alternator to meet the greater power able starting even after a long period. requirement and charge the battery at the same time. Controls Safety Driving tipsGeneral maintenance Self-help Technical data

owners manual Audi A5

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