These instructions apply to the BMW 3 Series Mk7 (G20) 2019-Present. For other models, please choose your vehicle here.
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When a service item — engine oil, brake fluid, vehicle check — comes due on your BMW 3 Series Mk7 (G20, 2019–present), the dash shows it under Condition Based Servicing (CBS). You reset each item yourself from the iDrive/cluster service menu once the work is done. Here’s how.
How CBS Works
The G20 monitors each service item by condition, not just mileage, and counts how it’s reset. Two rules matter: only reset an item once the work is actually done, and an item only resets if it’s at 90% or less of its life (so you can’t reset a nearly-new service). If both oil and vehicle-check are due, reset engine oil first.
How to Reset a Service Item on the G20
- Close the doors. Turn the ignition on without starting — press the start/stop button twice without touching the pedals (keyless), or turn the key to on.
- Open the service requirements / CBS list — via the iDrive CAR/Vehicle → Vehicle status → Service required menu, or by holding the trip/BC button on the wiper stalk until the service menu appears on the cluster.
- Select the item that’s due (e.g. Engine oil), then choose ‘Reset’ and confirm.
- Repeat for any other completed item. The CBS counter for that item returns to full.
If It Won’t Reset
- The item is above 90% life — CBS won’t let you reset an item that isn’t due yet.
- Brakes won’t reset — the brake-wear sensor must be working/connected.
- Make sure the on-board clock is set correctly — CBS uses it.
Frequently Asked Questions
What is Condition Based Servicing?
BMW’s system that tracks each service item by condition and shows what’s due, so you reset items individually rather than one global service light.
Do I need a diagnostic tool?
No — the resets are done from the iDrive/cluster menu with the ignition on.
Why won’t it let me reset?
An item only resets when it’s at 90% or less of its life; a nearly-new item can’t be reset.
Which order — oil or vehicle check?
Reset engine oil first if both are due.
If a warning light appeared with the service message, look it up on autodtcs.com. After battery work, see our 3 Series G20 battery guide.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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