Launch Tech USA Doppler Simulator (LAC05-04) — BSM and Blind Spot Radar Calibration Target

The Launch Tech USA Doppler Simulator (LAC05-04) is a dedicated radar calibration target designed for Blind Spot Monitoring (BSM) and cross traffic alert system calibration. If your shop already owns a Launch ADAS calibration frame — the X-431 ADAS Pro Plus, Mobile Plus, or HD — and you need to calibrate BSM radar systems, this is the specific target that makes it possible. It is also sold as a replacement or spare component for shops that own the Radar 3-in-1 (Launch part 701070015) and need a fresh LAC05-04 unit.

What a Doppler Simulator Does — and Why BSM Calibration Requires It

Blind spot monitoring radars work differently from adaptive cruise control (ACC) radars. An ACC radar looks forward and needs a static reflector target to calibrate its distance-sensing function. A BSM radar looks rearward and to the sides — and it is specifically designed to detect moving objects. That means a standard static reflector plate will not satisfy the calibration requirement. The LAC05-04 Doppler Simulator generates a frequency-shifted radar return that mimics a moving vehicle, giving the BSM control module the simulated input it needs to complete calibration and accept the procedure.

Without a Doppler simulator, you cannot perform a proper static BSM calibration on vehicles that require this target type. A shop attempting BSM calibration with the wrong target will either get a calibration fault or, worse, a false pass that leaves the system miscalibrated on a customer vehicle. The LAC05-04 solves that problem specifically.

Which Systems Require BSM Doppler Calibration

BSM calibration is required after any of the following:

• Rear bumper removal or replacement — BSM radar modules mount in or behind the rear bumper on most vehicles
• Rear-end collision repair — Any structural repair that moves the bumper cover, fascia, or rear quarter panel
• BSM radar module R&R — Replacement of the radar sensor itself
• BSM sensor bracket repair or realignment — Even minor bracket damage can shift the radar aim angle enough to require recalibration
• Rear suspension alignment changes — On some vehicles, rear alignment adjustments affect BSM aim specifications

Collision centers, frame shops, and dealerships handling rear-end repairs are the primary users of this target. If your shop does windshield work but no collision repair, you likely need the camera targets first. If you do collision repair, the Doppler simulator belongs in your calibration kit.

Compatible Launch ADAS Calibration Systems

The LAC05-04 mounts to the same stand used in the Radar 3-in-1 system and is compatible with the following Launch ADAS frames:

• X-431 ADAS Pro Plus — Launch's static calibration frame for passenger cars and light trucks
• X-431 ADAS Mobile Plus — Foldable mobile frame with five-line and cross laser; supports radar calibration when the Radar 3-in-1 or equivalent targets are present
• X-431 ADAS HD — Heavy-duty static frame for commercial vehicles and large trucks (verify target compatibility for your specific ADAS HD configuration)

The compatible diagnostic tablets for running the ADAS software alongside this target include the Throttle V, Torque Link, and Turbo III. Calibration procedures are guided through the X-431 ADAS software, which walks the technician through positioning, target placement, and the calibration sequence step by step.

Where the LAC05-04 Fits in the Launch Radar 3-in-1 System

The Radar 3-in-1 (701070015, sold separately at $4,495.95) is a single compact stand that holds three interchangeable radar targets:

• ACC Radar Target (LAM05-02) — For adaptive cruise control calibration
• Doppler Simulator (LAC05-04) — For BSM and cross traffic alert calibration
• Corner Reflector — For additional radar system calibration requirements

The LAC05-04 sold here as SKU LAU301250041 is the Doppler Simulator component on its own — useful as a replacement for a shop that already owns the Radar 3-in-1 stand, or for a shop building out their radar calibration capability piece by piece. If you need the complete radar calibration system from scratch, contact us to discuss the full Radar 3-in-1 kit or one of the bundled ADAS packages that include radar coverage.

What's Included

• LAC05-04 Doppler Simulator target unit
• Power adapter (the Doppler Simulator requires power to generate the frequency-shifted return signal)

Mounting hardware compatibility and any additional accessories depend on your existing Launch ADAS frame configuration. Call us if you need to confirm fit with your specific setup before ordering.

Who Should Buy This vs. the Full Radar 3-in-1 Kit

• Buy the LAC05-04 standalone if: You own the Radar 3-in-1 stand and your existing Doppler Simulator is damaged or lost, or if your calibration frame already supports this target mount and you only need the BSM-specific target.
• Buy the Radar 3-in-1 (701070015) if: You need full ACC, BSM, and corner reflector capability and do not yet own any of the three radar targets. The complete kit includes the stand, all three targets, the five-line laser device, and a storage case.
• Buy an ADAS Mobile Plus bundle with radar if: You need both the calibration frame AND radar capability in a single purchase. These bundles are available and can be configured for your shop's vehicle mix — call us to discuss.

Why Buy From OEM Diagnostic Tools?

• Authorized Launch Tech USA dealer since 2016 — we know the ADAS product line, not just the catalog listing
• Free ground shipping on this order
• Free tech support at 866-217-0063 — if you have questions about whether this target works with your frame, call before you order
• Full manufacturer warranty on every Launch product we sell
• Honest upgrade guidance — if the standalone target is not the right move for your shop, we will tell you

Call 866-217-0063 for quick answers and help!