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Service bulletin TT 01 18 16

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10185656
Published by NHTSA2021-02-04
Manufacturer's numberTT 01 18 16
Manufacturer's date2021-01-15
NHTSA componentELECTRICAL SYSTEM; EQUIPMENT

NHTSA's summary

Update to address DTC U300100 after a Charging System Concern, Discharged Battery or Battery Replacement

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Equipment and accessories

Trouble codes named

U3001

Vehicles listed
VOLKSWAGEN BEETLE2018, 2019
VOLKSWAGEN PASSAT2018, 2019, 2020
VOLKSWAGEN TIGUAN2018, 2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
19V6150002019-08-22. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE; STEERING:COLUMN LOCKING:ANTI-THEFT DEVICE
19V2410002019-03-27. EQUIPMENT:OTHER:LABELS
19V0940002019-02-13. SERVICE BRAKES; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
18V8240002018-11-26. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
VOS-26-472026-09-04. Service bulletin. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct the issue: Part number 3Q0-959-435N software version number 1307 has incorrect coding.
VOS-26-422026-08-05. Service bulletin. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct the issue: DA 0019 - Hotfix 12-V battery test(s) – No battery diagnosis - Inconclusive test result.
VOS-26-152026-04-06. Service bulletin. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct multiple test plans: All basic settings test for the following components - Fill and bleed cooling system issue, N493, J338, Camshaft, V465 etc. Use this test for all the basic setting. You will need to select the component you need to run the basic settings. But there are also stand-alone tests for each of those components.
VOS-26-012026-02-06. Service bulletin. This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct a test that is not reading any information from the battery data module (BDM) and will output:
V2715032016076_132026-01-07. Service bulletin. Diagnosis for Excessive Current Draw.
V9124052074273_62025-12-05. Service bulletin. A "How To" activate Car Net® 2.0 - Emergency Call Module and Communication Unit -J949-Vehicle is Offline (Not Connected)
V9124052074273_52025-09-04. Service bulletin. Activation
V5719022055190_62025-07-08. Service bulletin. Remote Key Battery Replacement
V9419012011521_202025-01-07. Service bulletin. Internal Moisture Accumulation
VOS-24-1352024-12-05. Service bulletin. This is a notice for software changes with the ODIS diagnostic program to correct the communication for the keyless start system. 00B7 - Interface for Access/Start: U101300: Control module not coded & Software Configuration – incorrect coding hotfix