jenniferice1
Mercedes B Klasse Sunroof Issue
Summary of the thread
A 2020 Mercedes B Klasse hybrid experienced a sunroof not initialized error, with the sunblind stuck and the convertible top unresponsive, potentially due to recent coding. The issue may have been caused by a power disruption when the battery was disconnected. A reset or recalibration of the sunroof mechanism and control unit was suggested and successfully resolved the problem.
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4 comment(s)
jenniferice1 (community.author)
The battery was disconnected during the coding. Could a disruption in power supply be a contributing factor to the sunroof malfunction? Are there diagnostic steps before more extensive repairs?
moritz_ice1
Yes, a power interruption can definitely affect the sunroof mechanism. A reset or recalibration is often required afterwards. If that doesn't work, you may need to visit a workshop to have the sunroof control module professionally diagnosed and potentially recoded.
jenniferice1 (community.author)
The dealer performed a complete sunroof reset and recalibration of the sunroof mechanism and sunroof control unit which resolved the issue. The repair cost was 75€. Thank you again for your assistance.
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MERCEDES
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BKLASSE
moritz_ice1
I experienced a similar sunroof issue on my B Klasse. It sounds like the sunroof control module might be the problem. Has the battery been disconnected recently?