Battery information36 © 2001 Nokia Mobile Phones. All rights reserved.PUK2 code (8 digits)The PUK2 code, supplied with some SIM cards, is required tochange a blocked PIN2 code. If you lose the code, contact yourservice provider.Battery informationYour radio unit does not contain its own battery. The voltage issupplied straight from your car battery to the car phone. The carphone works with a voltage from 10.8V to 16V.If the voltage is higher than 16V, the car phone switches off au-tomatically and remains off until the voltage drops to a valuewithin the permissible range.If the voltage of the car battery drops lower than 10.8V, a warn-ing appears that phone calls are not possible because of lowpower. If the voltage drops below approx. 6V, the phone switch-es off and will automatically switch on as soon as the voltagerises again. The next time the car phone is turned on, a messageappears on the display giving the reason for the error.