milaschmidt1
Mercedes X Klasse Multifunction Steering Wheel Issue
Summary of the thread
A 2017 Mercedes X Klasse had a malfunctioning multifunction steering wheel with unresponsive controls and an error stored. The suspected cause was a cable connection issue inside the steering wheel. After checking the fuses and consulting a shop, it was confirmed to be a broken cable, which was replaced, resolving the issue.
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4 comment(s)
milaschmidt1 (community.author)
When you mention the power supply to the steering control module, are we talking about checking fuses, or something else? And regarding the wiring harness, is that easily accessible, or will I have to dismantle the steering column to get a good look?
theomaier1
Yes, checking the relevant fuses would be a good first step. Consult your vehicle's manual or a wiring diagram to identify the specific fuse. As for the wiring harness, its accessibility can vary. It may be partially visible after removing the steering column covers, but a thorough inspection might necessitate partial disassembly. Given the potential complexity and safety-critical components like the airbag system, proceed with caution. A diagnostic assessment by a qualified technician is advisable.
milaschmidt1 (community.author)
I checked the fuses first and they were fine. I took it to a shop and it was a broken cable inside the steering wheel, just like I thought. They replaced the cable for 95€ and everything is working again. Thanks for pointing me in the right direction.
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MERCEDES
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XKLASSE
theomaier1
It's unfortunate you're experiencing issues with your Mercedes-Benz X Klasse. The multifunction steering system integrates controls like audio, telephone, and cruise control, managed through a control module within the steering wheel or column. A defective cable connection could disrupt communication. Have you verified the power supply to the steering control module? Also, have you inspected the wiring harness leading to the steering column for damage or corrosion?