Service bulletins for the 2020 Mercedes-Benz Sprinter
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
188 on file from NHTSA, as of 2026-10-19.
About B1A9C on the 2020 Mercedes-Benz Sprinter: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: B1A9C are shown. Show all
| LI83.10-N-071291 | 2023-01-05. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; VISIBILITY. Complaint Various customer concerns of Climate Control system operating inadequately. Cause Stepper motor linkage in the heater case may cause a mechanical fault during actuation during unfavorable environmental conditions. NOTE: If the vehicle is equipped with H13 (rear additional heat exchanger), There is an additional stepper motor in the rear heater case under the vehicle. This stepper motor can influence the normalization process. May include fault code: B1A9C07 the output for control valve "Left water valve" has a malfunction. There is a mechanical fault. The component is called N29/12 (rear additional heat exchanger ) . Remedy: See instructions |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.