# Service bulletin Update 23X1

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.

- Type: Service bulletin
- NHTSA id: 10150784
- Published by NHTSA: 2018\-12\-10
- Manufacturer's number: Update 23X1
- Manufacturer's date: 2018\-07\-19
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

## NHTSA's summary

Current Engine Control Module software does not properly operate the Leak Detection Pump heater circuit. This can allow moisture to collect within the pump and influence EVAP system measurements, which leads to erroneous EVAP fault codes stored in the ECM memory.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10150784-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10150784-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Engine

## Vehicles listed

- 2018 VOLKSWAGEN ATLAS

## Recalls for the same vehicles and component

- [18V824000](/recalls/nhtsa/18V824000.md), 2018-11-26: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

## Other bulletins for the same vehicles and component

- [V0116152014815\_20](/bulletins/11038146.md), 2026-10-06, Service bulletin: ENGINE. Suggested fuel additive
- [VWP\-26\-07](/bulletins/11035774.md), 2026-08-05, Warranty extension: ENGINE. For applicable 2018\-2022 Atlas and Atlas Cross Sport 3.6L Settlement Class Vehicles \(NA6 warranty key\), the New Vehicle Limited Warranty will be extended to cover 80% of the replacement of the Water Pump or Water Pump Gasket by an authorized Volkswagen Dealer to 8.5 years or 85,000 miles, whichever occurs first, from the vehicle’s original in\-service date.
- [VWP\-26\-07 FAQ](/bulletins/11035773.md), 2026-08-05, Warranty extension: ENGINE. Supporting FAQ for VWP\-26\-07 Main Engine Wiring Harness Limited Warranty Extension \(Class Action\)
- [VOS\-26\-42](/bulletins/11035772.md), 2026-08-05, Service bulletin: ELECTRICAL SYSTEM. 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.
- [V1718062017813\_24](/bulletins/11035762.md), 2026-08-05, Service bulletin: ENGINE. Oil Consumption Measurement and Electronic Oil Consumption Measurement
- [V1719012012855\_81](/bulletins/11034617.md), 2026-07-07, Service bulletin: ENGINE. Volkswagen Engine Oil Standards
- [TT 13\-20\-01\_3](/bulletins/11034614.md), 2026-07-07, Service bulletin: ENGINE. Instruction, how to lubicate engine before initial start.
- [TT 10\-18\-02\_2](/bulletins/11034613.md), 2026-07-07, Service bulletin: ENGINE. Lubricating engine components before reassembly.
- [VOS\-26\-21](/bulletins/11030847.md), 2026-04-06, Service bulletin: ENGINE. 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.
- [VOS\-26\-15](/bulletins/11030829.md), 2026-04-06, Service bulletin: ELECTRICAL SYSTEM. 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.

JSON: [/v1/bulletins/10150784](/v1/bulletins/10150784)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20Update%2023X1&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10150784&vehicle=Service%20bulletin%20Update%2023X1)