[eleykin]

Hi i have a 2021 BMW MX50I. Is it possible to code a way to disable the automatic seat belt tightening when you drive of ?

[thereef510]

its a safety feature, why on earth would you want to disable it? do you also want your airbags and antilock brakes disabled?

[eleykin]

No i do not want the airbags or brakes disabled. I want this disabled because a member that drivers with me has chest inflammation and it hurts them.

[scotchy]

Originally Posted by thereef510

its a safety feature, why on earth would you want to disable it? do you also want your airbags and antilock brakes disabled?

I could be wrong but I don't think it's a safety feature. My last Mercedes had it as well and you could turn it on or off through the settings.

[thereef510]

Originally Posted by scotchy

I could be wrong but I don't think it's a safety feature. My last Mercedes had it as well and you could turn it on or off through the settings.

it is a safety feature. I picked ours up at the PCD, and they drilled us on emergency braking and not only did the anti-lock brakes work as they should, but so did the seat belt tensioners to keep you from slapping your upper torso into the dashboard/airbag assembly. I, for one, am glad this feature exists, and there should be no earthly reason for BMW to give anyone an option to disable a *safety* feature.

[scotchy]

The "tug tug" that the seatbelt does when you've driven a bit, is a feature, that if turned off, wouldn't shut the whole "safety" tensioning off. Like I said, you could disable the feature of it doing that in my Mercedes. If you gave the belt a quick pull the tensioner still works, just the couple of tugs it gave when starting to drive was disabled.

Personally I don't mind it, other than it choking me on occasion. My wife is 5'7", 130ish lbs, she hates it.

[Addbuyer]

Mine doesn't tighten, not that I've noticed anyway. It certainly did on the Porsche and Mercs though

[X5 45e]

Originally Posted by Addbuyer

Mine doesn't tighten, not that I've noticed anyway. It certainly did on the Porsche and Mercs though

In Europe it is an option (active protection 5AL). In the US it is standard. So probably you didn't take it.

[Addbuyer]

Originally Posted by X5 45e

In Europe it is an option (active protection 5AL). In the US it is standard. So probably you didn't take it.

what does that tell you about US drivers

[raducris]

My 2015 X5 had the self-tightening when I bought it but it turned itself off after a few DIY coding sessions 🙂 I'm trying to figure which function this is in the ACSM module, I think it's the Automatenstrammer_Fahrer in CAFD3000 but playing with it does nothing...