Compare BMW 4 Series airbag repair quotes from specialist garages

Looming hundreds of feet up in Munich's skyline is BMW's headquarters, a vast and impressive building designed to look like four engine cylinders - the configuration that drove much of the brand's early success.

BMW has come a long way since 1927, when it produced its first car, the Dixi, shortly to be renamed the BMW 3/15. In 2022, it was awarded 'Best Manufacturer' at the AutoCar Britain's Best Car Awards, and the same year, it triumphed at the WhatCar? Awards, winning more accolades than any other brand. The M5 special edition, celebrating 20 years of BMW motorsport, is one of the rarest M automobiles in the world.

See how BMW's maintenance prices compare to Audi and Mercedes in this guide.

Airbag systems work thanks to onboard sensors that detect when a car has crashed. A small explosive device in the airbag module detonates, inflating the airbag, which protects the driver and passenger from impact with the front of the car.

This system has several components: the ECU, ignitor, sensors, inflator, warning lights, passenger occupancy sensors and the airbags themselves. If one or more of these develops a fault, you'll need to book a car airbag repair as soon as possible.

Learn more about how airbags work in this guide.

The most obvious sign you need an airbag ECU repair is the Supplemental Restraint System (SRS) warning light. When the airbag warning light comes on and stays on, an airbag light repair may be required, though the problem is likely related to the system rather than the light itself. In fact, the light may indicate a sensor problem, in which case you'll need to book a car airbag sensor repair.