What it shows
"Error: 12 V battery. Unable to restart. Please visit workshop."
Our technician checks your ID.4's 12V battery wherever it stands and swaps it if it has failed, day or night. It matters more than its size suggests: Volkswagen says energy from that battery is needed to close the circuit in the high-voltage battery, so a flat 12V battery is enough to stop a fully charged ID.4 switching on. The drive battery is left alone.
The ID.4 carries two batteries: the high-voltage pack that drives it and a 12V battery for everything else. Volkswagen lists lights, wipers, electric windows, driver assistance, radio, navigation and the onboard computer among what the 12V side powers in its electric cars.
This page, and the work we do on an ID.4, is about that 12V battery.
Call or WhatsApp with your location and car.
Get the price before anyone sets off.
A technician arrives in about 25 minutes.
Free test, new battery fitted, old one recycled.
Range on the display does not help when the 12V battery is flat. Without its energy, the high-voltage battery's circuit cannot close and the drive system stays off. Volkswagen's emergency information for the ID.4 from 2020 makes the same link from the other side: disconnecting the 12-volt battery in the engine compartment is one of its ways of switching the high-voltage system off.
So when an ID.4 will not come to life, the 12V battery is tested first, and a Volkswagen ID.4 battery replacement on that side is work done where the car stands.

Volkswagen's warning-light guide describes the red 12-volt battery lamp this way.
"Error: 12 V battery. Unable to restart. Please visit workshop."
A fault in the connection between the vehicle electrical system and the 12-volt battery.
Stop as soon as it is safe. Once the drive system is off, it cannot be switched back on without help such as jump leads.
Open 24/7 across Dubai. The price is agreed on the phone first.
Every ID.4 visit follows the same order, so a healthy battery is never replaced by mistake.
Which warning is showing, read from a photo or on the car
The 12V battery's condition, tested before it is disconnected
The fitted battery's label, so the replacement matches it
The power meter reaching READY once the 12V side is healthy
Battery Change Dubai tests your ID.4's 12V battery on the spot and fits a new one only after a failed test.
More than 20 mobile vans work across Dubai. For a battery call, a technician reaches you in about 25 minutes. The vans cover Al Karama, Dubai South, Business Bay, Downtown Dubai, office car parks, villa communities and highways.
Check the 12V battery first. Volkswagen says energy from it is needed to close the circuit in the high-voltage battery, so a flat 12V keeps the drive system off whatever range is shown. A test on the spot confirms it before anything is replaced or ordered.
At the front. Volkswagen's emergency information for the ID.4 from 2020 shows the 12-volt battery disconnected at its negative pole in the engine compartment. Our technician works there and leaves the high-voltage system alone, so nothing on the drive side is opened or handled.
No. Range comes from the high-voltage battery, which stays outside our work. The 12V battery runs the car's everyday electrics and lets the high-voltage system switch on, so replacing a failed one gets the car moving again without changing how far it goes on a charge.
It is part of the red 12-volt battery warning, which Volkswagen links to a fault between the electrical system and the 12-volt battery. Stop where it is safe. If the car has shut down, call us with your location and a technician tests the 12V battery at the car.
Our 12V batteries are priced from AED 175, fitting included; the figure for your ID.4 is confirmed during the call. Testing costs nothing and comes first, nobody charges you for the trip out, and our 1-year warranty comes with the new battery.