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Auxiliary battery malfunction

Auxiliary battery helps power the car's electrical system, like start-stop.

Costs

Every car issue can be caused by different things. Here are the most common ones

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Most Expensive

Cheapest case

Cheapest case

Discussions

User of our Carly Community asked the following questions regarding that fault:

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Details

Probability

Based on the values and symptoms you have entered, a crude estimation of the probability of this problem can be made

high-probability

HIGH

Typical consequences

If this defect is detected, it may lead to the following problems:

  • Malfunction of the vehicle electronics

Function of the auxiliary battery

The demands placed on car batteries in modern vehicles continue to rise steadily. Although the main task is to enable the vehicle to start, the "starter battery" can already do much more today. But over time, the battery gradually reaches its limits. That is why many manufacturers install an auxiliary battery.

Ihre Hauptaufgabe ist es, eine kontinuierliche und zuverlässige Stromversorgung zu gewährleisten, vor allem in Situationen, in denen das Fahrzeug ausgeschaltet ist, aber bestimmte Funktionen dennoch bedient werden müssen, wie z. B. die Alarmanlage, die Standheizung oder verschiedene Komfortfunktionen.