P0562 on BMW
System Voltage Low
P0562 on BMW vehicles indicates system voltage low. Au7o has documented this code across 2 BMW models — most commonly on i5, iX. P0562 means the engine computer detected that the vehicle's system (battery/charging) voltage is too low for normal operation. The computer constantly monitors charging-system voltage because nearly every sensor, injector, and module depends on a stable supply; sustained low voltage can cause erratic behavior and other false codes. This is most often a charging or battery problem — the alternator isn't keeping up, the battery is weak, or there's resistance in the cables/grounds. You may notice dim lights, slow cranking, or multiple unrelated warning lights. Typical repair costs on BMW range from $200 to $800, depending on the specific model and root cause.
Common Causes of P0562
- •Failing alternator or worn alternator brushes/regulator
- •Weak, old, or discharged battery
- •Corroded, loose, or damaged battery cables and terminals
- •Bad engine or chassis ground connections
- •Slipping, glazed, or broken serpentine/drive belt
- •High resistance in charging system wiring or fusible link
- •Faulty PCM voltage reference or charging-system control
P0562 on BMW by Model
BMW i5(1 issue)
- 12V Auxiliary Battery Drain and Dead Car Syndrome2024-2025
The i5 (both eDrive40 and M60 xDrive) uses a small 12V auxiliary battery to power the vehicle computer systems, door locks, and startup sequence. Like other BMW EVs, the i5 can experience excessive 12V battery drain when the car is parked for extended periods (more than 3-5 days). Multiple connected services modules continue drawing power even in sleep mode, depleting the 12V battery. A dead 12V battery renders the car completely inoperable — you cannot open the doors, shift out of park, or engage the main HV battery.
BMW iX(1 issue)
- 12V Auxiliary Battery Drain - Sleep Mode & Module Wake Issues2022-2025
The BMW iX uses a 60Ah AGM 12V battery that powers all vehicle electronics. Owners report the vehicle dying after several days of parking with the 12V battery completely dead while the main HV battery retains charge. The iX has components that cause phantom drain regardless of settings because the vehicle must always be ready to power on, and the 12V battery may last only 2 years in some cases. Software bugs can prevent proper sleep mode, keeping modules active and draining the 12V. The iDrive 8 system not entering sleep mode is a documented cause. Failed or stuck TCB (telematics) modules attempting constant cellular reconnection also contribute to drain. The DC-DC converter should maintain 12V charge from the HV battery during normal operation, so persistent drain indicates a software or hardware fault.
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View P0562 across all makes →Frequently Asked Questions
What does P0562 mean on BMW?▼
P0562 stands for "System Voltage Low." P0562 means the engine computer detected that the vehicle's system (battery/charging) voltage is too low for normal operation. The computer constantly monitors charging-system voltage because nearly every sensor, injector, and module depends on a stable supply; sustained low voltage can cause erratic behavior and other false codes. This is most often a charging or battery problem — the alternator isn't keeping up, the battery is weak, or there's resistance in the cables/grounds. You may notice dim lights, slow cranking, or multiple unrelated warning lights. On BMW specifically, this code is documented across 2 models.
What causes P0562 on BMW vehicles?▼
Common causes on BMW: Failing alternator or worn alternator brushes/regulator, Weak, old, or discharged battery, Corroded, loose, or damaged battery cables and terminals, Bad engine or chassis ground connections, Slipping, glazed, or broken serpentine/drive belt. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0562 on a BMW?▼
Repair costs on BMW range from $200 to $800, depending on the specific model and root cause.
Which BMW models have P0562 documented?▼
Au7o has documented P0562 on 2 BMW models: i5, iX.