What to do when you get a battery warning?ĭeciding what to do when the Volvo battery warning comes on can be tricky. If there are none for your car, check for a parasitic draw yourself. In most cases, such repairs will be free of charge to you. Call your Volvo dealer and check for any open recalls or TSBs. There are over twenty modules installed in your Volvo, and any one of them can drain the battery when the car is parked. Disconnect it for fifteen seconds with the engine running and reconnect. The BMS sensor is mounted at the negative post on the battery. BMS Needs Reset – If your battery is new or fully charged, the Battery Monitoring System (BMS) may need reset.Defective Central Electronic Module (CEM) – While not a common problem, it is possible for Volvo battery warnings to come on due to faulty CEMs. Typically if the CEM is the problem, you will notice several electrical issues in addition to the battery warning.Have the dealer diagnose the problem and, if necessary, update the satellite module software to fix the problem. For example, when the engine is off, the satellite receiver may draw excessive power. Excessive Battery Drain – Another problem triggering battery warnings on Volvo cars is modules that draw current even when the car is turned off.Voltage regulators can fail, triggering error codes such as Charging Fault Stop or Power System. Voltage Regulator – The alternator has a regular voltage build that helps keep the voltage in the 12.5 – 14-volt range when the car is running. Alternator – The alternator could also be the case here. If the alternator is not charging the car battery properly, your Volvo battery will not get charged, triggering a dashboard warning message.A loose or corroded connection at the battery or other ground points can cause the low battery warning message to appear.In rare cases, Volvos has reported this issue with a battery that is only two years old. With an old battery, you are more likely to get a battery warning in freezing weather. Weak Battery – If you have a battery that hasn’t been changed for over seven years, the problem could be the battery itself.Here is a list of the most common issues that trigger the Volvo battery warning on the instrument panel. If there is a charging problem with your Volvo, you are more likely to get a Charging Fault Stop Safely or Power System Service Urgent error message on the instrument cluster.In addition to the low battery warning on some Volvo models, you may see “ Low battery power save mode,” or ” Low charge, will soon enter power save mode,” or “ power safe mode.”.If you leave your Volvo parked for a long time, use a battery maintainer to charge your Volvo battery. This error message may also come if the car was parked for a few days.A low battery warning also comes on in the winter if you have an over five-year-old battery.If you are getting a Low Battery message, you most likely have a battery that has been discharged when you turn off the engine, the battery discharges but keeps lights, radio, heated seats, A/C, or any accessories ON.In that case, you need to reset the Battery Monitor Sensor (BMS). The low battery warning may stay on even after you install a new battery.
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