Brake Light On problems of the 2012 Kia Motor Optima

Brake light switch malfunctioning. Brake light on all the time rendering cruise control and electronic stability control inoperable. Loss of power in engine as it thinks brakes are applied making it dangerous to drive. Root cause is brake pedal stopper (kia part 32876-36000) developing a puncture hole over time making the brake switch believe brakes are applied. Known issue on other kia models. Believe the sorento already have a recall for something very similar.

While driving the vehicle began to decelerate (brake) on its own. When I pressed on the gas pedal the car would not accelerate. I was almost rear ended when I attempted to merge into traffic because my car immediately began to decelerate while pressing the gas pedal. It happened once again while driving on the interstate at about 65 mph and within seconds decelerated to about 40 mph without ever pressing the brake pedal. The brake lights are on even when the car is turned off. Due to this it appears my "traction control" warning indicator becomes illuminated. I am aware that a recall was issued for this exact same thing but only for the 2012-2014 kia forte (recall number 17v773000). This is a major safety issue/hazard for which the recall needs to be extended to the 2012 kia Optima as well.

Brakelights come on, even when car is turned off. When brakelights came on during driving, the gas pedal would not work to accelerate the car. Brake lights came on without ever touching the brake. Apparently the kia forte 2012-2014 has a recall for this exact issue but none has been issued on the Optima. This is a safety issue because the car unexpectedly loses acceleration power. Very dangerous, specially when merging or passing on an expressway.

Brake switch recalled on 2011 models, but my 2012 will not start mostly when it gets cold outside, brake pedal stiffens and wont decompress for engine to start, push buttn wont start car brake lights dont work. Vehicle will leave stranded without warning. It will work and then not work, intermitten.

2 day ago I was driving to work on the freeway and my car start acting weird like it wanted to stop, I paid no mind. So then that night coming home from work it start acting up again, this time I saw my brake lights turn on and my car started slowing fiwn. I had lost acceleration I had no response to the gas pedal. I would step on my brakes then release and the lights would go back to normal. This happened the whole 45 mins back home. So the next morning I was doing some research on what could cause this found out that the brake sensor stopper would not work properly on the kia forte. But it seems that this happen to the kia as well. It is very dengerous trying to drive like this especially on the freeway.

Brake lights stayed on when car was off cruise control light stayed on problems with acceleration took to dealer they said it needed new brake pedal sensor $160 to replace.

I first noticed a problem with my vehicle when the cruise control would randomly disengage while going down the interstate. Then a couple of weeks later I was making a left turn across a two lanes of traffic on a city street. When I first pushed the accelerator the car started to go and then suddenly I lost all acceleration. I let my foot off the accelerator and then pushed back down and was able to go. This was a very dangerous situation as I was stuck in the middle of two lanes of traffic for several extra seconds longer than necessary. A similar situation happened a couple of more time and when I parked the vehicle at home I noticed that brake light was staying on after I got out of the car. I took the car to the local kia dealership and they replaced the brake sensor which fixed all of the above problems. I would like to not that Hyundai issued a recall on the nearly identical sonata for this same issue and did so years ago and yet nothing for the Optima.

While moving forward at approximately 5mph, brakes were applied to stop vehicle and brake warning light illuminated. So far the dealership has replaced the brake boost pump- 3 times, the brake vacuum pump- 1 time, and the parking brake switch- 1 time. None of these fixes has fixed the problem.

While making a left turn from traffic signal, brake warning light illuminated. Dealership had just replaced brake boost pump because of same problem. Parking brake was not engaged, no other indications were noted. Vehicle being reported to the state under the lemon law.

While traveling in traffic at 40mph the brake warning light illuminated. Parking brake was not engaged and no other indications were noted. Light reset when vehicle was restarted. No stored codes for the fault. Still waiting for Kia Motor company to correct this defect. Dealership does not have an answer to the problem and kia contact on website is inoperable, so unable to contact manufacturer.

While accelerating to 45 mph, brake warning light illuminated. Parking brake was not on. No other indications noted. Dealership was contacted immediately. Dealer suggested that new brake boost pump may be defective and wants to replace it again. Part is on order.

While accelerating away from stop light the brake light illuminated. No other indicators, no other malfunctions. Parking brake was not on. Dealer was contacted immediately, but had no solutions to the problem. This is a recurring problem. The dealer has tried several things to fix problem with no results: 1st time- checked for stored code. No codes stored. Reset light by restarting car 2nd time- disconnected/reconnected electrical connector at brake boost pump. Reset light 3rd time- replaced brake boost pump 4th time- replaced parking brake switch at the current time, dealership has no solutions, or possible fixes for the illuminating brake indicator light. Awaiting contact from dealership with possible solution.

While accelerating away from a stop light the brake light illuminated. Emergency brake was not on. Dealership had just replaced the brake boost pump less than 300 miles earlier because of the same problem. I immediately took the vehicle to the dealership where they replaced the parking brake switch.

06/18/12- while accelerating from a stop light the vehicle brake light illuminated. Light would not go out until ignition was turned off and vehicle restarted. Car taken to dealer who had no solutions. 06/27/12- while accelerating up a hill, 30mph, the vehicle brake light illuminated. Light would not go out until vehicle restarted. Took to dealer with light illuminated, no stored codes, and no solutions. 07/02/12- while accelerating from stop light, the vehicle brake light illuminated. During sudden stop, due to traffic, antilock brakes failed to engage, vehicle rear brakes locked up, and car started to fishtail left. Call made to dealer. Was told someone would respond. No response.