VW / Audi 8-Pin Front Radar Sensor Wire Harness Connector – OEM 5WA972708A / 6189-8086 | Male & Female | ACC / AEB

The OEM 5WA972708A / 6189-8086 is an 8-pin connector used in Volkswagen and Audi front radar sensor harnesses for Adaptive Cruise Control (ACC) and Automatic Emergency Braking (AEB) systems. The VAG part number 5WA972708A and the Sumitomo cross-reference 6189-8086 refer to the same connector. The 8-pin configuration carries radar signal processing, CAN bus, power, ground, and diagnostic circuits for the front radar module. Available in Male and Female variants, bare or with 15cm pre-wired leads.

Key Specifications

• OEM Part Numbers: 5WA972708A (VAG) / 6189-8086 (Sumitomo cross-reference)
• Pin count: 8-pin
• Gender options: Male / Female
• Housing material: Nylon (PA66)
• Available as: Bare connector or 15cm pre-wired leads
• Application: Front radar sensor (ACC/AEB) harness
• Compatible brands: Volkswagen, Audi, Skoda, SEAT (VAG Group)

VAG Part Number Decoding: 5WA972708A

• 5WA — Vehicle platform prefix (VW Golf Mk8 / MQB Evo platform)
• 972 — Wiring harness / electrical connector component group
• 708 — Specific connector variant (8-pin radar harness)
• A — Revision suffix (first revision)

8-Pin Radar Connector Circuit Assignment

• Pins 1–2: Power supply (12V) and ground
• Pins 3–4: CAN High / CAN Low (radar module CAN bus — connects to powertrain CAN)
• Pins 5–6: Radar signal output (target detection data to ACC/AEB ECU)
• Pin 7: Radar module diagnostic / wake-up signal
• Pin 8: Radar module enable / ACC system enable signal

Compatible VW / Audi Models

• VW Golf Mk8 (CD1, 2019–present): Front radar for ACC and Travel Assist
• VW Passat B8 (3G, 2014–2023): Front radar for ACC and Front Assist
• VW Tiguan Mk2 (AD1, 2016–present): Front radar for ACC and Front Assist
• VW Arteon (3H, 2017–present): Front radar for ACC and Emergency Assist
• Audi A3 (8Y, 2020–present): Front radar for ACC and pre sense front
• Audi A4 (B9, 2015–present): Front radar for ACC and pre sense front
• Skoda Octavia (NX, 2020–present): Front radar for ACC and Front Assist
• SEAT Leon (KL, 2020–present): Front radar for ACC

Fault Codes from Radar Connector Degradation (VCDS / ODIS)

• U0073: CAN bus off (radar module CAN node lost)
• U0415: Invalid data received from ACC module
• C100000: ACC system fault (radar module not responding)
• C101300: Front Assist radar sensor: no signal
• C101400: Front Assist radar sensor: implausible signal

Radar Calibration After Connector Repair

After any radar harness repair, a radar sensor calibration (static aiming) is required using VCDS or ODIS:

• Park on a flat, level surface with at least 5m clear space in front
• Use a VAG-approved radar calibration target (reflector board)
• Run the “Front Assist – Basic Setting” procedure in VCDS (Module 13 – Adaptive Cruise Control)
• Verify correct tyre pressures and vehicle at kerb weight before calibration

Frequently Asked Questions

Q: My ACC stopped working after a front bumper repair — is this the connector?
A: Yes. Front bumper repairs frequently disturb the radar connector. Even if the connector appears plugged in, a partially dislodged connector causes intermittent radar signal loss. Inspect the connector locking tab and re-seat the connector before replacing the radar module (€400–€1,200).

Q: What is the difference between 5WA972708A and similar VAG radar connectors?
A: The 5WA prefix identifies this connector as specific to the MQB Evo platform (Golf Mk8 and later). Earlier MQB platform vehicles (Golf Mk7, Passat B8 early) may use different radar connector part numbers. Cross-reference your vehicle’s wiring diagram via ETKA to confirm the correct part number.