# Service bulletin 23X1 20180809

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: 10149828
- Published by NHTSA: 2018\-12\-03
- Manufacturer's number: 23X1 20180809
- Manufacturer's date: 2018\-07\-09
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM:SOFTWARE; ENGINE

## 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. REVISED

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10149828-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10149828-0001.pdf)

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

## Components

Electrical system, Engine, Transmission and driveline, Automatic transmission, Software, Transmission control module

## Vehicles listed

- 2018 VOLKSWAGEN ATLAS

## Other bulletins for the same vehicles and component

- [V392001206039111](/bulletins/10250803.md), 2024-03-06, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. Bevel box leaking, update to Arteon labor operation numbers.
- [TT 91 24 01](/bulletins/10249136.md), 2024-02-06, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Addressing Cybersecurity or Vehicle Hack concerns
- [V371802203397511](/bulletins/10238310.md), 2023-07-10, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Automatic Transmission Fluid Requirements
- [V011812201460319](/bulletins/10238301.md), 2023-07-10, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Software Version Management \(SVM\) instruction.
- [VOS\-23\-14](/bulletins/10238206.md), 2023-07-10, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. This communication is a notice for software changes with the ODIS program for specific cars
- [VOS1603](/bulletins/10213875.md), 2022-06-13, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE. Release Notes Supplement.
- [VOS1602](/bulletins/10213874.md), 2022-06-13, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; UNKNOWN OR OTHER. Mandatory Installation from Web\-Server.
- [VOS1601](/bulletins/10213873.md), 2022-06-13, Service bulletin: UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE. Mandatory Installation from Web\-Server.
- [A002155201173212](/bulletins/10204722.md), 2022-01-05, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains general instructions for software updates.
- [V0019042054866\_4](/bulletins/10200454.md), 2021-09-02, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL. SD creator instruction, updated to include model year 2022.

JSON: [/v1/bulletins/10149828](/v1/bulletins/10149828)

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