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 DIAGNOSISELECTRICALCOMPONENT 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 VIEWPIN ARRANGEMENTS DIGITAL SOUND SYSTEM CONTROL MODULE -J525-, THROUGH JUNE 2019
2025 Audi A4 allroad Premium Plus
Pin Arrangements Digital Sound System Control Module -J525-, through June 2019
2025 Audi A4 allroad Premium PlusSECTION Pin Arrangements Digital Sound System Control Module -J525-, through June 2019
| -T38- (A) | Designation | -T38- (A) | Designation | -T38- (A) | Designation | ||
|---|---|---|---|---|---|---|---|
| 1 | Terminal 30 | 14 | Right Front Treble Speaker 2 -R221- Right Front Midrange Speaker 2 -R277- | 27 | Left effects speaker -R209- | ||
| 2 | Terminal 31 | 15 | Center speaker 2 -R219- | 28 | Right effects speaker -R210- | ||
| 3 | Center speaker 2 -R219- | 16 | Right Rear Treble Speaker -R16- | 29 | Microphone Unit (in front roof module) -R164- | ||
| 4 | Left Rear Treble Speaker -R14- | 17 | Right Rear Treble Speaker -R16- | 30 | Shielding | ||
| 5 | Left Rear Treble Speaker -R14- | 18 | Center speaker -R208- | 31 | Left Front Treble Speaker -R20- | ||
| 6 | Center speaker -R208- | 19 | Subwoofer -R211- | 32 | Right Front Treble Speaker -R22- | ||
| 7 | Left Front Bass Speaker -R21- | 20 | Subwoofer -R211- | 33 | Left Front Midrange Speaker -R103- | ||
| 8 | Left Front Bass Speaker -R21- | 21 | Subwoofer -R211- | 34 | Right Front Midrange Speaker -R104- | ||
| 9 | Right Front Bass Speaker -R23- | 22 | Subwoofer -R211- | 35 | Left effects speaker -R209- | ||
| 10 | Right Front Bass Speaker -R23- | 23 | Left Front Treble Speaker -R20- | 36 | Right effects speaker -R210- | ||
| 11 | Left Front Treble Speaker 2 -R220- Left Front Midrange Speaker 2 -R276- | 24 | Right Front Treble Speaker -R22- | 37 | Microphone Unit (in front roof module) -R164- | ||
| 12 | Left Front Treble Speaker 2 -R220- Left Front Midrange Speaker 2 -R276- | 25 | Left Front Midrange Speaker -R103- | 38 | Network data bus diagnosis | ||
| 13 | Right Front Treble Speaker 2 -R221- Right Front Midrange Speaker 2 -R277- | 26 | Right Front Midrange Speaker -R104- |
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.