Mercedes-Benz A 220 2020 — technical service bulletin
Bulletin LI91.30-P-069668 · NHTSA communication 10177558 · issued Jun 16, 2020
Technical service bulletin
communication type
Electrical System
component
2020
model years
7
vehicle entries
Official summary
The seat heating in the vehicle cannot be activated. When the seat heating button is pressed the 3 red LEDs light up briefly and then go off again after a brief period (approx. 3 seconds). To prevent too high surface temperatures on the heating surfaces (and thereby any damage to the system), the cut-in frequency of the seat heating is limited.The new control units are available and can be ordered.
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.