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Replacing the Battery Without Losing Radio CODE

Model: BMW Serie 7 E66, E67, E68, E65, MK 4 - Years 2001-2008
Part: Warning light – error code

If the battery is so drained that it prevents the engine from starting but you can still turn on the ignition, the programming memories for the clock, radio, etc., have not been lost. At this point, you can replace the battery without having to reprogram everything by keeping the electrical system powered. The vehicle in question has the battery located in the rear hood, and in the engine compartment, it has two jump-start terminals. Connect a booster or a jump battery to the terminals using cables and proceed with the battery replacement by removing the cover of the trunk floor and the spare tire. Once the new battery is installed, disconnect the booster.

Updated on 19 February 2026 by ScegliAuto

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