Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2025A4 ALLROAD PREMIUM PLUSREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCOMPONENT LOCATIONSCOMPONENT LOCATIONS: CONTROL MODULES IN REAR PART OF VEHICLECOMPONENT LOCATIONS: CONTROL MODULES IN REAR PART OF VEHICLEDIGITAL SOUND SYSTEM CONTROL MODULE -J525-, PREMIUM-SOUND COMPONENT LOCATION AND CONNECTOR END VIEWNOTES
2025 Audi A4 allroad Premium Plus
Digital Sound System Control Module -J525-, PREMIUM-SOUND COMPONENT LOCATION AND CONNECTOR END VIEW: Notes
2025 Audi A4 allroad Premium PlusSECTION Notes
Component Location
In rear left in luggage compartment.
Fig 1: Digital Sound System Control Module -J525-, Premium-Sound Component Location And Connector End View
- 1 - Digital Sound System Control Module -J525-
- A -
38-Pin Connector -T38-, black
- Through June 2019
- A -
38-Pin Connector -T38a-, black
- From July 2019
- B -
2-Pin Connector -T2vb-, black
- MOST Bus
- Through June 2019
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.