Second Hand Mercedes-Benz EQB Ignition Switch

No — the EQB is a fully electric vehicle and does not have a traditional ignition switch at all. Instead of a keyed ignition, it uses a push-button start system combined with a keyless entry card or key fob, so there is no mechanical ignition barrel or switch to replace in the conventional sense. If you are having trouble starting your EQB or problems with the start button system, the part you may actually need is the start/stop button assembly, the steering column electronic module, or possibly the key fob itself — confirm the exact fault with a breaker or auto electrician against your registration.

Because the EQB has no mechanical ignition switch, a no-start fault is unlikely to be caused by a failed ignition switch. Common causes on electric vehicles include a flat 12V auxiliary battery, a faulty brake switch (which the car needs to detect before allowing start), or an issue with the keyless start antenna or control module. Describe the exact symptom to a breaker or EV specialist so they can point you toward the correct used part.

Neither the EQB 300 nor the EQB 350 4MATIC was fitted with an ignition barrel — this applies across all power outputs and all-wheel-drive variants of the EQB, because the entire model range is fully electric and uses a push-button start system throughout. There is no variant of the EQB that reverts to a keyed ignition. If you are sourcing a used start-related component, a breaker familiar with EV parts will be able to advise on the correct module or switch assembly for your registration.

No trim level of the EQB — including entry-level, Sport, AMG Line, or AMG Line Premium — was ever fitted with a traditional ignition switch, as the absence of one is a fundamental feature of the electric drivetrain rather than a trim decision. Trim level affects things like interior finish and driver assistance features, not the start system architecture. Whatever trim your EQB is, the part you are searching for simply does not exist on this vehicle.

The GLB does use a traditional ignition switch because it is powered by internal combustion engines, but the EQB — despite sharing the MFA2 platform — is fully electric and was never designed with an ignition switch fitment point. The two vehicles are not interchangeable in this respect, and fitting a GLB ignition switch to an EQB is not applicable. If you are chasing a start-system fault on your EQB, speak to a breaker who specialises in electric Mercedes models and provide your registration so they can identify the correct component.