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Service bulletin Circular19O3REV2

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 id10168341
Published by NHTSA2019-12-06
Manufacturer's numberCircular19O3REV2
Manufacturer's date2019-11-08
NHTSA componentENGINE; EQUIPMENT

NHTSA's summary

The coolant bottle may leak coolant into the electrical connector for the coolant level sensor. REVISED Updated claiming instructions for connector pin(s) replacement. Added reminder – when scheduling this repair, please ask the customer to bring all vehicle keys with them to their repair appointment.

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

Engine, Equipment and accessories

Vehicles listed
VOLKSWAGEN JETTA2019
VOLKSWAGEN TIGUAN2018

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

Recalls for the same vehicles and component
18V1590002018-03-08. ENGINE

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
V0116152014815_202026-10-06. Service bulletin. Suggested fuel additive
V1718062017813_242026-08-05. Service bulletin. Oil Consumption Measurement and Electronic Oil Consumption Measurement
V1719012012855_812026-07-07. Service bulletin. Volkswagen Engine Oil Standards
TT 13-20-01_32026-07-07. Service bulletin. Instruction, how to lubicate engine before initial start.
TT 10-18-02_22026-07-07. Service bulletin. Lubricating engine components before reassembly.
VOS-26-212026-04-06. 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 the error message ERP0204E could occur during perform initial operation, software configuration, SVM updates for any control module(s) etc.
SM 57-20252025-12-05. Other. This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.
WLA-25-112025-11-10. Service bulletin. Coolant Bleed Procedure
V2125012077512_22025-11-10. Service bulletin. Turbocharger repair or replace due to stuck wastegate.
V1917012022548_152025-11-10. Service bulletin. G12Evo can now be mixed with previous coolants.