X5 - Chassis Function Limited

A place for open-ended discussion on any car-related topic.
MattG82
Junior
Posts: 10
Joined: Wed Nov 05, 2025 1:43 am

Greetings,

Last year, I purchased an X5 40d, and the prior owner had substituted the air suspension with springs due to multiple concerns. A warning appears upon starting the vehicle or after a brief drive, indicating 'Chassis Function Restricted.'


The former owner indicated that this issue began occurring intermittently following the suspension modification, perhaps linked to configuration settings.

Can anyone guide me on how to eliminate the warning message? Do I require an individual with an official BMW diagnostic tool, or must I visit an authorised BMW service dealer? I now own limited financial resources, so I am seeking an economical solution if feasible.

Thank you very much!
MattG82
Junior
Posts: 10
Joined: Wed Nov 05, 2025 1:43 am

I neglected to specify that it is a 2016 model.
vendimoto55
Moderator
Posts: 109
Joined: Wed May 22, 2019 5:33 pm

A BMW dealer or professional is not required to do the scan; any diagnostic tool capable of reading the module will suffice.
Numerous establishments currently possess advanced tools that are proficient.
What is your location?
MattG82
Junior
Posts: 10
Joined: Wed Nov 05, 2025 1:43 am

Thank you for your response. I reside in Moffat, located in the southern borders of Scotland. In close proximity to Carlisle, however.
JohnSmith78
Newbie
Posts: 8
Joined: Tue Nov 04, 2025 11:48 pm

I would have expected any warnings related to the suspension modification to manifest immediately upon completion of the switch.
According to Johnny, conducting a fault code scan is the initial step required.
MattG82
Junior
Posts: 10
Joined: Wed Nov 05, 2025 1:43 am

The warning is sporadic; at times, it fails to display entirely. The local garage cleared the fault code, but it reappears.
Evans76
Newbie
Posts: 2
Joined: Wed Nov 05, 2025 1:05 am

Clear the code; I have installed lowering springs on my M4. My EDC displayed a code afterwards, but I cleaned it and it has not reappeared.
JohnSmith78
Newbie
Posts: 8
Joined: Tue Nov 04, 2025 11:48 pm

What was the code?
MattG82
Junior
Posts: 10
Joined: Wed Nov 05, 2025 1:43 am

I am, regrettably, unaware.
MattG82
Junior
Posts: 10
Joined: Wed Nov 05, 2025 1:43 am

I have contacted a firm named 'Defined Coding' that claims they can recode it remotely for approximately £145.
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