# Service bulletin LI83.30\-P\-079196

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: 11024516
- Published by NHTSA: 2025\-10\-28
- Manufacturer's number: LI83.30\-P\-079196
- Manufacturer's date: 2025\-10\-27
- NHTSA component: ENGINE

## NHTSA's summary

Complaint Yellow instrument cluster message: "Cooling system fault, operating energy input reduced, service required". Cause Fault code "B3A0077 \- The regulation valve in the refrigerant circuit for the battery cooling gets stuck open. The ordered position cannot be achieved" stored. Faulty expansion valve component part Y140/1 Remedy Check the part number of Y140/1. If the vehicle has A 297 830 79 03 or older, replace Y140/1 with A 297 830 89 03 or newer. Do not replace defective components with part number A 297 830 8903 and an expansion valve production date after February 1, 2025\! Please create TIPS case, attach the current quick test and attach picture of the evaporator assembly component part label and a picture of the production date of the EXV Y140/1 \(see exampled attached\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024516-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11024516-9999.pdf)

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

## Components

Engine

## Trouble codes named

B3A00

## Vehicles listed

- 2023 to 2024 MERCEDES\-BENZ AMG EQE
- 2024 to 2025 MERCEDES\-BENZ AMG EQE SUV 4MATIC
- 2022 to 2024 MERCEDES\-BENZ AMG EQS
- 2023 to 2025 MERCEDES\-BENZ EQE 350 4MATIC
- 2023 to 2025 MERCEDES\-BENZ EQE 350\+
- 2023 to 2024 MERCEDES\-BENZ EQE 500
- 2023 to 2024 MERCEDES\-BENZ EQE 500 4MATIC
- 2023 to 2025 MERCEDES\-BENZ EQE SUV 350 4MATIC
- 2023 to 2025 MERCEDES\-BENZ EQE SUV 350\+
- 2023 to 2025 MERCEDES\-BENZ EQE SUV 500 4MATIC
- 2022 MERCEDES\-BENZ EQS 450
- 2023 to 2024 MERCEDES\-BENZ EQS 450 4MATIC
- 2022 to 2024 MERCEDES\-BENZ EQS 450\+
- 2022 to 2024 MERCEDES\-BENZ EQS 580
- 2022 to 2023 MERCEDES\-BENZ EQS 580 4MATIC
- 2023 to 2025 MERCEDES\-BENZ EQS SUV 450 4MATIC
- 2023 to 2025 MERCEDES\-BENZ EQS SUV 450\+
- 2023 to 2025 MERCEDES\-BENZ EQS SUV 580 4MATIC
- 2024 MERCEDES\-BENZ redundant EQE 350
- 2023 MERCEDES\-BENZ redundant EQE 350 4MATIC
- 2023 to 2024 MERCEDES\-BENZ redundant EQS 450
- 2024 to 2025 MERCEDES\-MAYBACH EQS SUV 680 4MATIC

JSON: [/v1/bulletins/11024516](/v1/bulletins/11024516)

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