Low-voltage power system
Song / Seal U
- Color
- Red
- Urgency
- Immediate
Most lamps light for a few seconds when you power the car on. That check is not a fault by itself. This page does not replace the owner’s manual for your model year and market. Icons are schematic illustrations used on this site. They are not offered as the vehicle maker’s artwork, and they have not been checked against it. They may not match the lamp on your cluster. Urgency levels are this site’s classification, not the maker’s. If they differ from the manual, follow the manual.
What it means
This is the 12-volt side of the car, not the large traction-battery gauge. It reports the supply that feeds the lights, the screens, the locks, and the control units, and the small auxiliary battery that backs it up. While driving, a steady lamp means that supply is not healthy. During charging, the same lamp can mean the charge equipment or the on-board charger has a fault. On Song Plus and Seal U this lamp is the 12-volt supply. The traction-battery percentage, and the fuel gauge on a plug-in, can both look usable while this lamp is on.
What to do
Switch off the air conditioning and the fans to reduce the load, stop in a safe place, and arrange a check. If you keep driving, steering assist, lights, and a clean shutdown can fade as the auxiliary battery drops. Plugging in the high-voltage charge port does not, by itself, restore a failed low-voltage supply.
Related lamps
Common questions
- The big battery still shows plenty of charge. Why is this lamp on?
- The percent gauge is the traction pack. This lamp is the 12-volt supply. One can look healthy while the other has failed.
- It came on while the car was charging. Is that the same fault?
- During a charge, this lamp can mean the charge equipment or the on-board charger, not only the 12-volt battery. Stop the charge and have that session checked before you rely on the car.