# Service bulletin LI09.00\-P\-074794

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: 10213044
- Published by NHTSA: 2022\-06\-02
- Manufacturer's number: LI09.00\-P\-074794
- Manufacturer's date: 2022\-05\-03
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Complaint Customer reports a warning message in red in the instrument cluster: "Water fording not possible\! Service required". The message is no longer active following an ignition cycle. Cause As a result of an absent or aborted reference run of the air flaps of the N127 'drivetrain' control unit \(PTCU\), the fault codes P153001 and P153101 are stored in the fault memory and the "Water fording not possible" warning message appears in the instrument cluster. The flap system nevertheless functions correctly. Note: The fault codes must be the only ones stored in the fault memory. Additional entries in the fault memory that concern the intake air flap system could indicate a mechanical fault in the system Remedy 1. Perform software update of the N127 'powertrain' control unit \(PTCU\) \(XENTRY data status 12/2021 or more recent\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10213044-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10213044-9999.pdf)

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

## Components

Electrical system

## Trouble codes named

P1530, P1531

## Vehicles listed

- 2019 to 2020 MERCEDES\-BENZ G 550
- 2019 to 2020 MERCEDES\-BENZ G63

JSON: [/v1/bulletins/10213044](/v1/bulletins/10213044)

[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%20LI09.00-P-074794&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10213044&vehicle=Service%20bulletin%20LI09.00-P-074794)