ive been advised that its normally the sign of a main starter battery that either needs charging or is slowly dying. On starting the engine, the voltage drops to a level where the battery backup siren thinks the vehicle is being disabled.

Hello. Im new on here having just purchased my first Landy, 2003 90. Ive had it a week and its been fine, but has now started beeping twice after i start it. Any ideas why, and how to stop it ? TIA.