2Q0907572J Radar Sensor Genuine OEM ACC Front Radar Control Unit for VW Tiguan Audi Skoda SEAT

About this part

The 2Q0907572J radar sensor is the brand new genuine OEM front distance radar control unit for early Volkswagen Group MQB cars equipped with Adaptive Cruise Control, Front Assist and automatic emergency braking. Manufactured by ADC Automotive Distance Control Systems GmbH in Lindau, Germany and stamped VW AG, this is the J-index German-built ARS4-B unit from the 2Q0 907 572 family. The label on the housing reads 2Q0 907 572 J with index 0156, the hardware reference 2Q0 907 572 B H01 and software index 10S, followed by FRONTRADARSTEUERGERAET, MADE IN GERMANY, KMM C1001001 and the type approval code A2.C733-6962.0. Mounted centrally behind the front bumper, it measures the range, azimuth and closing speed of every target ahead and supplies that target list to the distance regulation control module. This listing is for the single sensor on its own, brand new and unused, not for a complete ACC retrofit package.

radar sensor — genuine 2Q0907572J front ACC radar control unit on the Continental ARS4-B platform, made in Germany, carrying the early 2Q0 907 572 B H01 hardware revision; the J suffix of the 2Q0907572 series, later replaced by 2Q0907572M and then by 2Q0907561K.

OE/OEM Part Number:

2Q0907572J, 2Q0907572H, 2Q0907572G, 2Q0907572E, 2Q0907572M, 2Q0907572L, 2Q0907561K, 2Q0907561H, 2Q0907561J

Continental / ADC: ARS4-B, 2Q0 907 572 B H01

What this sensor does on the car

One module feeding three systems. The ARS4-B is a 76 to 77 GHz FMCW radar with a wide short-range field of roughly 55 metres at plus or minus 45 degrees and a narrow long-range beam reaching about 120 metres at plus or minus 9 degrees. It refreshes its target list around fifteen times a second and publishes it over the CAN bus. Adaptive Cruise Control uses the list to hold the selected time gap, Front Assist uses it to warn and pre-charge the brakes, and autonomous emergency braking uses it to stop the car when the driver does not react. Unlike a windscreen camera, the radar keeps working in heavy rain, fog, darkness and low sun, which is why a single faulty sensor usually disables the whole driver assist stack rather than just the cruise control function.

Why the J-index unit gets ordered. The sensor lives low in the front bumper on a plastic bracket, so a parking knock, a kerb strike or a careless bumper removal can crack the mount or push the beam off axis by a degree. The electronics may still power up, but the gateway logs a misalignment or calibration not performed fault and refuses to enable ACC. Water tracking down a damaged housing into the seven-pin connector corrodes the terminals and produces intermittent no-communication codes. Metallic flake paint, chrome wrap or a metalised film over the radar window attenuates the signal and causes phantom targets. Genuine internal failures are less common than these external causes, so the bracket, wiring and bumper surface should always be checked before the sensor is condemned.

Hardware revision H01, supersession and what is in the box

H01 is the early hardware. All the 2Q0 907 572 B units share the same ARS4-B board family and the same seven-pin connector, but VW and ADC issued successive hardware revisions. This 2Q0907572J carries H01, the 2Q0907572M carries H02, and the Chinese-built 2Q0 907 561 unit carries H03. Matching the hardware revision matters because the gateway, ABS and instrument cluster software on an early car was validated against the early dataset. If your original sensor reads 2Q0 907 572 B H01, an H01 replacement is the most conservative choice: it keeps the coding and calibration dataset the vehicle already expects, and avoids the re-coding work that a later hardware revision can require.

The supersession chain. VW ran this sensor through the letter suffixes 2Q0907572E, G, H, J and M, then renumbered the family to 2Q0 907 561, where the current catalogue numbers are 2Q0907561K and 2Q0907561M. The J suffix is therefore an earlier step on the same sensor road rather than a different component. A dealer quoting 2Q0907561K for a 2017 Tiguan is describing the same functional position. Because a used unit from a breaker may still be flashed to an older or vehicle-specific software index, a brand new sensor removes the mismatched-firmware problem that so often stops coding halfway through.

This is one sensor, not a retrofit kit. Our ACC retrofit kit listed under the same part number family includes the wiring harness, steering column stalk or buttons, fixing hardware and coding guidance needed to add ACC to a car that never had it. This product is the bare radar control unit for a car that already has the factory driver assistance package. No harness, no bracket, no switches and no remote coding service are included. If the vehicle was built without ACC wiring, order the kit instead.

PR codes decide the function set. Cars built with PR code 6K2 have Front Assist with autonomous emergency braking but no full ACC, while 6K3 adds ACC with stop-and-go. The radar hardware is shared; the enabled functions belong to the car’s coding. Fitting the correct sensor will not add ACC to a 6K2 car. There is no left-hand or right-hand variant — one centrally mounted module serves every position.

Not to be confused with 2Q0907550D. That unit is the USA-built 2Q0 907 550 family with hardware 2Q0 907 819 H04 for the smaller MQB A0 cars. Both units say ARS4-B on the label and look almost identical, but they carry different VW numbers, different hardware references, different countries of origin and different datasets. They are not interchangeable. Read the number and the hardware index printed on the original sensor before ordering.

Symptoms, diagnosis and installation

Typical symptoms. ACC unavailable or dropping out on the motorway, a Front Assist warning that will not clear, driver assist systems reported as restricted at every start-up, unexpected braking with nothing ahead, or a diagnostic scan showing no communication, internal fault, misalignment or calibration not performed on the front radar module. After any bumper, grille or radiator work, inspect the bracket and connector first.

Fitting and calibration. Mount the unit in the correct front bracket orientation, seat the seven-pin plug until it clicks, and make sure the bumper cover in front of the radar is clean, undamaged and free of metallic film or heavy paint build-up. This is a coded module. After mechanical fitting, use ODIS, VCDS or an equivalent VW Group capable tool to confirm the module is visible on the CAN bus, run the radar alignment routine with the specified target plate and distance, clear every stored fault and carry out a road test to verify distance regulation. Without coding and calibration ACC stays inactive and the dash warning returns. Calibration and coding charges belong to the fitting workshop and are not covered by the parts warranty.

Physical specification. ARS4-B 76 to 77 GHz FMCW radar, approximately 92 by 68 by 30 mm, around 0.4 kg, seven-pin CAN connector, sealed black housing with four mounting bosses and moulded cooling ribs. Radio approvals printed on this unit include FCC ID OAYARS4B, IC 4135A-ARS4B, CMIIT ID 2014DJ6494, ANATEL 4057-14-6068, KC 202-LSE009 and CE 03482. Compare the label on your original sensor with the product photos before ordering, and send us the VIN if you are unsure.

Fitment

This J-index H01 unit belongs to the earlier production years of the 2Q0 907 572 family. Fitment is gated by the factory PR code and by the number on the original sensor, not by the model name alone. Use this table as a guide and check the part number on your old unit, or send us the VIN, before ordering:

Shipping and packing

Orders leave within one to two working days of cleared payment. Each sensor is packed in a foam-lined box with the connector and the radar face protected, so the housing seal, the four mounting bosses and the plug arrive undamaged. Tracking is emailed when the parcel is handed to the carrier. Customs charges, where they apply, are the buyer’s responsibility.

Condition & warranty

Brand new genuine quality 2Q0907572J radar sensor, twelve months warranty against manufacturing defects covering the unit as supplied. The warranty does not cover impact damage, water ingress through a damaged housing or connector, calibration and coding costs, or a unit fitted without the required alignment procedure. If a part arrives faulty, send us photos and the fault scan before returning anything.

Wholesale

Tiered pricing for 1 pc, 5 pcs and 20 pcs is shown below. Bodyshops and resellers handling front-end and ADAS repairs should ask for a combined quote — we price mixed orders of radar sensors, mounting brackets, grille badges and ACC stalks together, and calibration jobs regularly need more than the sensor alone. If you maintain a fleet of early MQB cars, keeping one H01 unit on the shelf avoids the coding surprises that come with a later hardware revision.