Mercedes-Benz C 300 2022 — technical service bulletin
Bulletin LI91.30-P-074208 · NHTSA communication 10207206 · issued Jan 6, 2022
Technical service bulletin
communication type
Seats
component
2022
model years
1
vehicle entries
Official summary
Complaint Model series 206: Front seat heating nonfunctional Cause Cause is an internal error in the 'seat heating' control unit with the following designation: "B221A96 - An internal error is present in the 'seat heating' control unit. There is an internal component fault." Remedy Please do not perform any work. Do not flash, update, code or recommission the 'seat heating' control unit! Please create a PTSS case. The 'seat heating' control unit is required for analysis. Additional required information: In which situation/under which conditions did the complaint occur? Is there any specific be
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.