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.
Forward Facing Radar
The forward facing radar is a sensor that is connected to the Forward Sensing Module (FSM). Information transfer between the radar and the Forward Sensing Module (FSM) occurs via local CAN communication. The radar is positioned in the front section of the vehicle (behind the grille).
The forward facing radar is only found in vehicles equipped with adaptive cruise control, collision warning, automatic braking/brake support and distance control.
The forward-sensing radar is used to (identify and) sense targets (vehicles in front) that move in the same direction in front of one's own vehicle. When a target is detected, the radar senses the target's speed and distance in relation to the own vehicle.
When replacing the forward facing radar, the new unit must be calibrated using the diagnostic tool.
This must also be done when replacing the control module during software downloading.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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