Seatbelt Chime / Reminder Tweaks
BMW's seatbelt reminder can be over-eager — chiming when you're shuffling the car a few feet in a driveway, onto a trailer, or onto a dyno. Coding lets you soften or adjust it. This is about taming a nuisance for low-speed, off-road moves — not about driving unbelted. Read the note first; the belt stays on when you drive.
Always wear your seatbelt
The reminder exists because belts save lives, and wearing one is legally required almost everywhere. The sensible use of this coding is to quieten an over-aggressive chime for slow, private manoeuvres — not to drive without a belt. We'd recommend softening or shortening the reminder rather than fully disabling it, and reverting it if you sell the car or before an inspection. Buckle up every time you drive.
What It Actually Does
Adjusts the reminder — your call how far.
The seatbelt reminder (chime plus dash light) is handled by the crash-safety module. Depending on the car, coding can reduce the chime's aggressiveness, shorten how long it sounds, or change the speed/time thresholds — and in some cases disable the audible part entirely. Our steer is to soften rather than kill it: keep the visual reminder, tame the noise. It's a single setting, fully reversible, and changes nothing about the belt or airbags themselves.
Before you start
Confirm your car's supported, use a supported adapter, and follow the safe coding routine — stable voltage, one change at a time, and note the original value so you can revert.
How It's Done
By control unit — the way the app is laid out.
Connect to the Car
Plug the adapter into the OBD port, ignition on (engine running or a charger connected for stable voltage), open BimmerCode and tap Connect. Let it identify the car and read the control units.
Pick the Vehicle & Use Standard Mode
Select your vehicle and choose Standard mode for plain-language toggles. You'll land on the Control units list — each with a description of what it controls.
Open the "Advanced Crash Safety Module"
Tap the unit described as "Seat belt reminder" — the Advanced Crash Safety Module. Go by that description; the exact name can vary by car.
Find the Reminder Setting & Note It
Find the seatbelt-reminder / warning option, and record its current value first (screenshot or note) — this is your undo. Never skip it.
Soften It, Then Code
Adjust the setting to reduce or shorten the reminder (preferably not full-off), then tap the code/checkmark (write) button. Change only this one setting this session.
Test It
With the car safely stationary, check the reminder now behaves as you intended. Then buckle up and drive as normal.
Reverting It
Back to factory in seconds.
To restore the original reminder — and you should before selling the car or an inspection — set the value back to the original you recorded and code it. The factory behaviour returns exactly. This is why the safe routine has you note the original first. See reverting to factory coding on the hub.
FAQ
Should I fully disable the seatbelt chime?
We'd advise against it. The reminder is a safety feature, and you should wear your belt every time you drive. The reasonable use of this coding is to soften or shorten an over-eager chime for slow private manoeuvres — keep at least the visual reminder, and revert before selling or an inspection.
Which control unit is it in?
The Advanced Crash Safety Module — the one the app describes as "Seat belt reminder." Go by that description rather than the exact name, which can vary by car.
Does this affect the airbags or belt pretensioners?
No — it only changes the reminder chime/warning behaviour, not the belts, pretensioners or airbags, which are untouched. It's a notification setting, and it's reversible.
Will it affect inspection or resale?
A non-standard safety-reminder setting could be queried at inspection or by a buyer, so reverting to the original value before either is the sensible move — which is easy, since you noted it before changing.
Is it reversible?
Yes — fully. Restore the original value you recorded and code it, and the factory reminder returns exactly. Follow the usual care: stable voltage, supported adapter, one change at a time.
The Bottom Line
If the chime drives you mad shuffling the car around at walking pace, coding the Advanced Crash Safety Module lets you tame it — but treat it as softening a nuisance, not removing a safety feature. Keep the visual reminder, revert before selling or inspection, and always wear your belt when driving. Follow the safe routine, note the original value, and see more on the BimmerCode hub.