Overview of possible causes
A breakdown due to a drained battery or a problem in the vehicle energy system is not necessarily the result of a faulty battery. The various causes for discharge of the battery can be placed in two main categories:
- Vehicle faults:
- Vehicle does not assume sleep mode.
- The vehicle keeps being woken up.
- Standby current too high in rest state.
- Faulty alternator (poor charge balance)
- Faulty battery.
- Unfavorable customer behavior:
- Side lights, parking light or hazard warning flashers were switched on for too long.
- Terminal R or Terminal 15 switched on for too long
- Long immobilization period.
- Unfavorable driving profile (short-distance driving).
- Frequent use of auxiliary consumers or use of auxiliary consumers for a longer period (increased power consumption at a standstill).