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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSAUDI2018A5 QUATTRO PRESTIGE, 2D CONVERTIBLEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 137 (COMMUNICATION)91 COMMUNICATIONSOUND SYSTEMCONNECTOR ASSIGNMENTS
2018 Audi A5 Quattro Prestige, 2D Convertible
Connector Assignments
2018 Audi A5 Quattro Prestige, 2D ConvertibleSECTION Connector Assignments
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2020 Audi S3, 2020 Audi RS 3, 2020 Audi A3 Quattro, 2020 Audi A3, and 2019 Audi S3. However, it is still accessible from the selected car via links, so may be relevant.
Digital Sound System Control Module J525Β
- 38-Pin Connector -T38-
- MOST Bus
1 - 38-Pin Connector T38Β
- Terminal 30
- Terminal 31
- Not Assigned
- Left Rear Bass Speaker -R15- (+)
- Left Rear Bass Speaker -R15- (-)
- Center Speaker -R208- (-)
- Left Front Bass Speaker -R21- (-)
- Left Front Bass Speaker -R21- (+)
- Right Front Bass Speaker -R23- (+)
- Right Front Bass Speaker -R23- (-)
- Left Front Midrange Speaker -R103- (-)
- Left Front Midrange Speaker -R103- (+)
- Right Front Midrange Speaker -R104- (-)
- Right Front Midrange Speaker -R104- (+)
- Not Assigned
- Right Rear Bass Speaker -R17- (-)
- Right Rear Bass Speaker -R17- (+)
- Center Speaker -R208- (+)
- Subwoofer -R211- (-)
- Subwoofer -R211- (+)
- Subwoofer -R211- (+)
- Subwoofer -R211- (-)
- Right Front Treble Speaker -R22- (-)
- Left Front Treble Speaker -R20- (-)
- Left Rear Treble Speaker -R14- (+)
- Right Rear Treble Speaker -R16- (-)
- Right Effects Speaker -R210- (-)
- Left Effects Speaker -R209- (-)
- Microphone input (-) from Microphone Unit In Front Roof Module -R164-, Interior Microphone -R74-
- Not Assigned
- Right Front Treble Speaker -R22- (+)
- Left Front Treble Speaker -R20- (+)
- Left Rear Treble Speaker -R14- (-)
- Right Rear Treble Speaker -R16- (-)
- Right Effects Speaker -R210- (+)
- Left Effects Speaker -R209- (+)
- Microphone input (+) from Microphone Unit In Front Roof Module -R164-, Interior Microphone -R74-
- Ring break diagnostic line
2 - MOST busΒ
- Input
- Output
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.