# Service bulletin 37504

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: 11027192
- Published by NHTSA: 2026\-01\-07
- Manufacturer's number: 37504
- Manufacturer's date: 2025\-12\-20
- NHTSA component: POWER TRAIN

## NHTSA's summary

This is a TJ Text Only no attachment If a customer experiences a DIM message stating "Propulsion Service Required" and IEM P0A7A48 is stored, please follow the advice under "Service".

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11027192-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11027192-9999.pdf)

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

## Components

Transmission and driveline

## Trouble codes named

P0A7A

## Vehicles listed

- 2022 to 2023 VOLVO C40BEV
- 2021 to 2023 VOLVO XC40

## Other bulletins for the same vehicles and component

- [37504.3.0](/bulletins/11037967.md), 2026-10-05, Service bulletin: POWER TRAIN. This is a TJ Text Only no attachment If a customer experiences a DIM message stating "Propulsion Service Required" and IEM P0A7A48 is stored, please follow the advice under "Service".
- [36496.10.0](/bulletins/11033734.md), 2026-06-08, Service bulletin: POWER TRAIN. This is a Technical Journal: Intermittent knocking noise during acceleration. If the sound corresponds to attached sound file, change front drive shafts to the below part numbers.
- [37504](/bulletins/11023543.md), 2025-10-02, Service bulletin: POWER TRAIN. This is a TJ Text Only no attachment If a customer experiences a DIM message stating "Propulsion Service Required" and IEM P0A7A48 is stored, please follow the advice under "Service".
- [35732](/bulletins/11016899.md), 2025-04-09, Service bulletin: POWER TRAIN. This is a Technical Journal: Clicking sound from transmission area.\&\#13; This is considered a normal operating characteristic/function of the vehicle.\&\#13;
- [36989](/bulletins/11016890.md), 2025-04-09, Service bulletin: POWER TRAIN. This is a Technical Journal: Vehicle jerks and TCM DTC P071164 set. A software solution is introduced from version 3.4.4.
- [36496](/bulletins/11014114.md), 2025-02-11, Service bulletin: POWER TRAIN. This is a Technical Journal: Intermittent knocking noise during acceleration. If the sound corresponds to attached sound file, change front drive shafts to the below part numbers.
- [36734.2.0](/bulletins/10248307.md), 2024-01-04, Service bulletin: ENGINE AND ENGINE COOLING; POWER TRAIN. This is a Technical Journal: Turbo wastegate rod rattling noise. Replace wastegate rod.

JSON: [/v1/bulletins/11027192](/v1/bulletins/11027192)

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