2Q0907572M Radar Sensor Genuine OEM ACC Front Radar Control Unit for VW Tiguan Audi Skoda SEAT

About this part

The 2Q0907572M radar sensor is the brand new genuine OEM front distance radar control unit for Volkswagen Group MQB cars fitted with Adaptive Cruise Control, Front Assist and automatic emergency braking. Built by ADC Automotive Distance Control Systems GmbH of Lindau for Continental and stamped VW AG, this is the German-built ARS4-B unit from the 2Q0 907 572 family that sits centrally behind the front bumper or grille and measures the range, azimuth and closing speed of every target ahead. The label on the housing reads 2Q0 907 572 M with index 0233, the hardware reference 2Q0 907 572 B H02 and software index 19S, followed by FRONTRADAR-STEUERGERAET, MADE IN GERMANY and the VW AG logo. It is a genuine, brand new replacement for a Tiguan, Ateca, Kodiaq or Q2 that has lost ACC after a front-end repair, or that reports a persistent Front Assist and distance control fault.

radar sensor — genuine 2Q0907572M front ACC radar control unit on the Continental ARS4-B hardware, made in Germany, carrying the 2Q0 907 572 B H02 hardware reference; the later M-index of the 2Q0907572 series now superseded by 2Q0907561K.

OE/OEM Part Number:

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

Continental / ADC: ARS4-B, 2Q0 907 572 B H02

What this radar actually does

One sensor, three safety functions. The ARS4-B is a 77 GHz FMCW radar with a short-range field of roughly 55 m at plus or minus 45 degrees and a long-range field out to about 120 m at plus or minus 9 degrees, extending further still in a narrow central beam. It scans around fifteen times a second, tracks many targets at once over CAN and supplies the target list that ACC uses to hold the set gap, Front Assist uses to warn and pre-charge the brakes, and AEB uses to brake the car if the driver does not react. Because the radar works in rain, fog, darkness and direct glare where a camera struggles, a fault in this one module normally takes the whole driver assist stack offline rather than just disabling cruise control.

Why they get replaced. The unit lives on a plastic bracket low in the front bumper, so a parking impact, a kerb strike or a clumsy bumper removal can crack the mount or push the beam a degree off axis. The electronics still power up, but the car logs a misalignment or calibration fault and refuses to enable ACC. Water entering through a damaged housing or a wet seven-pin connector corrodes the tinned terminals and produces intermittent no-communication codes. Metallic flake paint, chrome wrap or a metalised film applied over the radar window attenuates the signal and causes phantom targets and unexpected braking. Internal failures do occur, but alignment, wiring and the bumper surface should be checked first.

Part number, supersession and the difference from 2Q0907550D

Read the whole label, not just the model name. Both 2Q0907572M and 2Q0907550D are built on the Continental ARS4-B platform and look almost identical, but they are different VW part numbers with different hardware references, different country of origin and different datasets. The 2Q0907550D unit is the USA-built 2Q0 907 550 family with hardware 2Q0 907 819 H04 for the smaller MQB A0 cars; this 2Q0907572M is the German-built 2Q0 907 572 family with hardware 2Q0 907 572 B H02 for the Tiguan, Kodiaq, Ateca and Q2 class of cars. They are not interchangeable simply because both say ARS4-B. Match the number printed on the original sensor and its hardware index before ordering.

Supersession chain. VW ran this sensor through the letter suffixes 2Q0907572E, G, H, J and M, then moved it to the 2Q0 907 561 family: the current catalogue number is 2Q0907561K, and the official parts listing names 2Q0907572M as a superseded number for it. If your old unit carries an earlier letter, or the dealer quotes 2Q0907561K, this is the same sensor road. A used unit from a breaker may still be flashed to an older software index; a brand new sensor avoids the mismatched-firmware problem that stops coding from completing.

PR codes matter. 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, but the coding and the enabled function set belong to the car. Fitting the correct sensor will not add ACC to a 6K2 car without the proper retrofit, coding and, where required, the steering wheel stalk and harness. The unit is a single centrally mounted module with no left or right hand variant.

Symptoms, diagnosis and installation

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

Fitting and calibration. Mount the unit in the correct front bracket orientation, seat the seven-pin connector 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 seen on the CAN bus, run the radar alignment or calibration routine with the specified target and distance, clear all stored faults and carry out a road test to confirm distance regulation. Without coding and calibration the ACC will stay inactive and the warning will return. Calibration and coding costs are the responsibility of 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. 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. Confirm the number on your original sensor before ordering.

Fitment

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, 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 2Q0907572M 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 doing 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.