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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11023543
Published by NHTSA2025-10-02
Manufacturer's number37504
Manufacturer's date2025-09-22
NHTSA componentPOWER 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

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Trouble codes named

P0A7A

Vehicles listed
VOLVO C40BEV2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
VOLVO XC402021, 2022, 2023

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
37504.3.02026-10-05. Service bulletin. 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".
36496.10.02026-06-08. Service bulletin. 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.
375042026-01-07. Service bulletin. 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".
357322025-04-09. Service bulletin. This is a Technical Journal: Clicking sound from transmission area.
 This is considered a normal operating characteristic/function of the vehicle.
369892025-04-09. Service bulletin. This is a Technical Journal: Vehicle jerks and TCM DTC P071164 set. A software solution is introduced from version 3.4.4.
364962025-02-11. Service bulletin. 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.
36734.2.02024-01-04. Service bulletin. This is a Technical Journal: Turbo wastegate rod rattling noise. Replace wastegate rod.