Cheap BMW i4 Brake Light Switch

Yes, the BMW i4 does have a brake light switch — even though it is a battery-electric vehicle, it still uses a conventional hydraulic brake pedal with a mechanical brake light switch mounted on the pedal box, just like a petrol or diesel BMW. The switch tells the car's systems (and following traffic) when the brake pedal is being pressed, and it works independently of the regenerative braking system. So searching for a used brake light switch for your i4 is entirely correct.

The BMW i4 launched in late 2021 and has been produced as a single first-generation model through to the time of writing, with no fundamental platform change or facelift that is known to have altered the brake pedal assembly. That said, BMW does occasionally make running production changes to components like this, so you should confirm the exact part number against your registration with the breaker before buying. Never assume fitment without that check.

Trim and performance level generally do not affect brake light switch fitment, as the switch sits on the pedal box rather than in the braking hardware itself. The i4 M50 has uprated brakes compared with the eDrive40, but the brake light switch is a pedal-mounted component and is unlikely to differ between variants. Confirm the part number with the breaker against your registration to be certain, but trim level alone should not be the deciding factor here.

The eDrive35 and eDrive40 variants share the same basic i4 platform and pedal assembly, and since the brake light switch is a pedal-box component rather than part of the braking hardware, fitment is likely to be the same across these variants. However, always give the breaker your registration number so they can cross-reference the part number and confirm compatibility before you commit to a purchase.

The i4 shares its basic platform architecture with the G26 4 Series Gran Coupe, and the pedal assembly and brake light switch may well be shared parts — this is a question worth putting directly to the breaker, as they will be able to cross-reference part numbers across those models. Do not simply assume interchangeability without that confirmation, as differences in wiring connectors or switch geometry can cause problems even when parts look identical.

No — the brake light switch is a single centrally mounted component on the brake pedal assembly, so there is no nearside or offside distinction to worry about. The key things to confirm with the breaker are the model year of the donor car and the part number, to make sure you are getting the correct switch for your specific i4 build.