Suzuki Palette Warning Lights: Radar Sensor Issues Fix

As someone with some experience working on Suzuki vehicles, I had a similar electronic issue with my 2014 Suzuki Swift. The collision avoidance system and cruise control started acting up, throwing multiple warning lights on the dashboard. After checking the front of the car, I noticed the radar sensor behind the front grille was covered in road grime and debris. The safety systems were malfunctioning simply because the sensor was too dirty to function properly. Took it to a workshop where they performed a thorough cleaning of the radar sensor and surrounding area. Total cost was 45€ for the cleaning service. After that, all systems returned to normal operation without requiring any complex calibration. To help diagnose your specific case, could you share: Are there any specific error codes showing? Did this start suddenly or gradually? Have you checked if the front sensor area is clean and unobstructed? Have you recently driven through heavy rain or muddy conditions? This sensor malfunction is often a simple fix, but its worth checking these details to rule out more serious issues with the electronic control units.

Thank you for the helpful response. I had my last service at 38481 KM, and during inspection, the technician noticed that the cruise control issues started right after driving through heavy rain. The error codes P0451 and C1245 appeared suddenly on the dashboard after that rainy drive. I checked under the front bumper and noticed some water marks around the radar sensor housing. The driving assistance features are still not working properly after drying the area with a clean cloth. The safety systems warning light remains on, suggesting this might be more than just a cleaning issue. Based on what you mentioned about sensor cleaning, I will have a professional check the entire radar calibration system since my attempts at cleaning did not resolve the electronic issue.

Interesting follow-up about your water damage concerns. After seeing your error codes, I can share that my Suzuki Swift had nearly identical symptoms when water infiltrated the radar sensor housing. Simply drying the exterior wasnt enough in my case either, as moisture had already gotten inside the sensor unit. The radar sensor actually needed proper drying and resealing. The workshop discovered a worn rubber seal around the sensor housing that allowed water intrusion. The complete fix involved: Removing and drying the radar sensor unit, Replacing the damaged rubber seals, Performing a full radar calibration, Testing all driving assistance systems Total repair cost was 320€, including parts and labor. The radar calibration alone took about 2 hours since all adaptive cruise and collision avoidance systems needed precise adjustment. Since your error codes match my experience and the symptoms started after rain exposure, I strongly suspect you have the same water intrusion issue. The longer you wait, the higher the risk of internal corrosion affecting more electronic components. Best to have it checked soon by a workshop equipped to handle radar sensor repairs and calibration. They should also verify the drainage channels around the sensor housing arent blocked, which can contribute to these problems.

Thanks for the detailed information about the water damage repair. I called the workshop today and scheduled an appointment for next week. The service advisor mentioned they frequently deal with similar radar sensor issues after heavy rain exposure, especially with worn seals. They quoted roughly 350€ for a complete inspection, sensor drying, seal replacement, and radar calibration. The estimate includes testing all adaptive cruise and collision avoidance systems to ensure everything works correctly after repair. The warning lights and error codes are still present, but at least now I understand the likely cause. I will make sure to mention the P0451 and C1245 codes when I bring it in, along with the timing of the rain exposure and my attempts to dry the sensor area. I will keep an eye on the weather until the appointment and try to avoid driving in heavy rain to prevent any additional water damage to the sensor system. Once repaired, I plan to have them check the seals during regular maintenance to prevent future issues.