WenmarOpen by Wenmar Pro

Service bulletins for the 2021 Volkswagen Jetta

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.

487 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
V1719012012855452022-04-06. Service bulletin. ENGINE AND ENGINE COOLING. Update engine oil quality standard lists (attachments)
V1718062017813162022-04-06. Service bulletin. ENGINE AND ENGINE COOLING. Engine oil consumption measurement. Update procedure and work sheet.
TT 57 21 01_42022-04-06. Service bulletin. EQUIPMENT:ELECTRICAL. MQB KESSY adaptation tip. Updated to include Taos.
V2715032016076112022-04-06. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Discharged Battery, Diagnosis for excessive current draw.
Dealer 91Di2022-04-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Infotainment System Software Update - 91Di launch
91CZ91DC91diVER32022-04-06. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Infotainment System Software Update - 91Di code added for USA only
V1917012022548_92022-03-04. Service bulletin. ENGINE AND ENGINE COOLING. Update model and model year applicability, introduce new coolant G12Evo.
V1719012012855442022-03-04. Service bulletin. ENGINE. Update engine oil quality standard lists (attachments)
TT 97 21 02_52022-03-04. Service bulletin. EQUIPMENT:MECHANICAL:BOOM/CRANE/LADDER:CONTROLS/CONTROL WIRING. checking/ repair door wiring harness connector for various DTCs or erratic window operation.
Circ91CZ91DCREV12022-03-04. Service bulletin. ELECTRICAL SYSTEM:BODY CONTROL MODULE:SOFTWARE. Infotainment System Software Update - Golf models added
V4619022015173302022-03-04. Service bulletin. SERVICE BRAKES. Brake Rotor, Vibration / Pulsation Instruction (U.S. Only)
TT 91 20 09_52022-03-04. Service bulletin. EQUIPMENT:ELECTRICAL. Modified diagnosis for Car Net® 2.0 - Emergency Call Module and Communication Unit -J949- Green Light Does Not Illuminate
SM 09-20222022-03-04. Service bulletin. EQUIPMENT. This special notice is to inform dealers to return the parts listed if it meets the criteria provided.
Dealer91CZ91DC_22022-03-04. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Infotainment System Software Update
Circular91CZ91DC2022-03-04. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT. Infotainment System Software Update
VOS-22-032022-02-04. Service bulletin. ELECTRICAL SYSTEM. This document outlines updates to the ODIS diagnostic software. Updates include corrected diagnostic test plans for the stated vehicles.
DC_OTA_UPDATES2022-02-04. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; UNKNOWN OR OTHER; EQUIPMENT:ELECTRICAL:INFOTAINMENT. Over-the-Air Software Updates dealer communication
Dealer91CZ91DC2022-02-04. Service bulletin. EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE; UNKNOWN OR OTHER. Infotainment System Software Update
V1719012012855432022-02-04. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; ENGINE. Update engine oil quality standard lists (attachments)
V0019012040590102022-02-04. Service bulletin. EQUIPMENT; STRUCTURE. Water under transportation wrapping appears as paint defect. Update model year applicability.
TT 97 21 02_42022-02-04. Service bulletin. ELECTRICAL SYSTEM. Fault code U019900, U020000, B101729, B101715, B103611, B103629 along with Various Warnings
TT 15 22 012022-02-04. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING. Camshaft timing faults may store in ECM after cylinder head or engine replacement.
V8718082049039152022-01-06. Service bulletin. ELECTRICAL SYSTEM. Cleaning of R1234YF Refrigerant Circuit. Updated to include Atlas front bumper R & I w/ labor operation number
V4619012010245282022-01-06. Service bulletin. SERVICE BRAKES. Bake Vibration, Pulsation, Noise when braking during PDI
V2719012011894172022-01-06. Service bulletin. ELECTRICAL SYSTEM. Battery testing using VW special tools, updated to include additional model year applicability and include I.D.4.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.