Mazda Cx9 Automatic Brake Control Unit For your information, in short, I wanted to replace the pads at a mechanic shop, but unfortunately he was not able to perform only the preparation for maintenance and direct disassembly, he manually tampered with the caliper, afterwards the brake warning light appeared on the dashboard. I did an inspection and they said that the electronic control unit needs replacement, so I bought the attached new one, but it didn't solve the problem and I transferred it to another center. It turned out the mechanic damaged the caliper, so I had to buy a new one, installed it, and everything was fixed, alhamdulillah. Unfortunately, there remain two parts: one is new, and the second is used original. All spare parts are for sale, nothing wrong with them. Purchase invoices are attached. May Allah compensate me with good.