# Service bulletin Circular26N6REV1

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: 10175945
- Published by NHTSA: 2020\-06\-04
- Manufacturer's number: Circular26N6REV1
- Manufacturer's date: 2020\-05\-22
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM:12V/24V/48V BATTERY

## NHTSA's summary

Over time and mileage, the factory\-installed catalyst may not perform as required. If the effectiveness of the catalyst is reduced, this may result in increased tailpipe emissions and the vehicle could fail an emissions \(IM\) inspection. Updated claiming instructions to include connecting battery charger. Updated parts return core information in Section E.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175945-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175945-9999.pdf)

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

## Components

Electrical system, Engine, Exhaust and emissions, 12\-volt battery

## Vehicles listed

- 2018 VOLKSWAGEN ATLAS

## Other bulletins for the same vehicles and component

- [V271901201189424](/bulletins/10239655.md), 2023-08-04, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery Testing and Charging using Midtronics VAS6161 and or GRX3000 Vas Charger
- [TT 27 20 02\_3](/bulletins/10236096.md), 2023-06-06, Service bulletin: EQUIPMENT:OTHER:LABELS; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Battery adaptation procedure when battery label is missing.
- [V271503201607611](/bulletins/10208920.md), 2022-04-06, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Discharged Battery, Diagnosis for excessive current draw.
- [TT 27 20 02\_1](/bulletins/10185168.md), 2021-01-08, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:LABELS. Battery Id for testing
- [TT 27 19 03](/bulletins/10176398.md), 2020-07-07, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE. Diagnostic for no crank concern.
- [Circular26M4REV1](/bulletins/10175944.md), 2020-06-04, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Over time and mileage, the factory\-installed catalyst may not perform as required. If the effectiveness of the catalyst is reduced, this may result in increased tailpipe emissions and the vehicle could fail an emissions \(IM\) inspection. Updated claiming instructions to include connecting battery charger.
- [VWP\-19\-03](/bulletins/10161660.md), 2019-07-08, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This Document informs dealers on the new warranty extension of the 12 Volt Battery Warranty Extension for certain Atlas vehicles
- [TT 01 19 05](/bulletins/10159340.md), 2019-05-06, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING. Battery disconnect instructions for Atlas.
- [V271902\-2033978](/bulletins/10159017.md), 2019-04-22, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Update to model year applicability. Generator Replacement Charging System inoperative/malfunctions, noise from engine compartment, accessory drive belt damaged or missing.
- [TT 27 19 01](/bulletins/10157343.md), 2019-04-08, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE. Start/Stop diagnosis.

JSON: [/v1/bulletins/10175945](/v1/bulletins/10175945)

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