Question about Hyundai Motor 2004 Sonata

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Had a Brake light switch removed and replaced and since then the car does not want to accelerate and there is smoke coming out of the wheels. What could cause this?

We called the service department that replaced switch. They said it must just be a coincidence. Took the car to another repair center and they told us all our brakes, rotors and calipers were bad and needed replacing. We got them fixed and when we started driving the car home the car started smoking again. Called the repair shop they checked it over and said the master cylinder was bad. They repaired that and we picked up car. Then we drove car for about 20 minutes and smoke started coming out of the wheel area again. Repair shop was puzzled. I reminded them that we recently had the brake light switch removed and replaced. They towed car in again and checked the brake light switch. It was installed backwards. They claimed that once they switched over the switch it was working fine. The repair shop claims that due to the brake light switch being installed backward it caused continuous activation of the braking hydraulic system, resulting in continuous application of the brake components. This caused extreme high heat levels to all front and rear braking components. The parts melted and failed under the stress. both front wheel bearings, the master cylinder, the front left caliper, and right caliper, pads, and front brake rotor were all replaced. Who is lying to us??????

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  • Emily Bennette
    Emily Bennette Aug 04, 2017

    Wow, that sounds like a really scary and annoying situation. If my car keeps repeatedly having smoke billow out of it while I was driving I would get freaked out. I am no expert but it does seem like the problem has to do with your brakes. Hopefully, a mechanic can figure out what is wrong with your car.



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Accelerometer Removal and Installation
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