2014 Hyundai Santa Fe: adaptive cruise control problems

Filed Sep 23, 2021 · Engine · MN

Was driving down the freeway in cruise control when I heard a knocking noise. Soon after, the RPM jumped from 2 to 6 and smoke came out the exhaust. I pulled over immediately, and oil was all over the ground. Towed it back to service shop, and there are 2 holes in the engine. Had car inspected by state, and they said this was in relation to the recall 17V226000: bearing wear may result in engine seizure. No warning lights ever came on.

Filed Feb 15, 2020 · Acceleration · 50,000 miles · TX

When the cruise control is active, pushing the button to decelerate occasionally causes the vehicle to downshift and begin accelerating. Manually disengaging the cruise control or pushing the brake pedal halts the acceleration. This appears to be a dangerous failure mode. The dealership that examined the vehicle said this is due to a defective clock spring in the steering column that can cause buttons to perform the opposite task or fail to work at all. The dealer noted that this is not an uncommon issue. The vehicle has approximately 50,000 miles and the repair is not extremely expensive at $485. It seems that it would be much safer if the failure mode was to simply not allow the cruise control to engage when a fault is detected.

Filed Jan 27, 2020 · Acceleration, Airbags · 60,000 miles · IL

The electrical prompts on the face of the steering wheel begin to malfunction. First the volume control stopped, next the hands mobile phone controls. Then the cruise control functions and the menu for user settings stopped as well as airbags. When turning calls are dropped , all functions are inoperable whether car is in motion or stationary.

Filed Jun 17, 2019 · Engine · 94,438 miles · MI · fire

While driving on the highway at about 75mph, in the left lane, with the cruise control engaged, my 2014 hyundai sante fe (3.5l v6, 94k miles and very well maintained) started to make a quiet ticking noise. The vehicle had been on the highway for about 40 minutes since the last stop. About one minute after the ticking began, boom! Huge explosion. Catastrophic engine failure. The engine evidently seized, threw a rod through the block, punctured the oil pan spraying oil everywhere and igniting. Parts were flying out from the behind the vehicle and heavy white smoke was billowing. Luckily I was near an exit ramp and the motorists around me we kind enough to let me over to coast off the ramp. One lady followed me and pulled alongside my vehicle to urgently inform me that my car was on fire. I immediately pulled over and parked the vehicle and me, my wife, and my daughter jumped out. Flames were visible from underneath the car. My wife and another motorist called 911 for fire support. Three gentleman, one in a semi, two in an SUV, had parked on the highway and ran over to our location with a fire extinguisher (about 200 yds). By the time they got there the fire had gone out. The fire department arrived shortly after that and checked the vehicle with an thermo scanner to make sure the fire was out. The incident was terrifying and extremely dangerous.

Filed Oct 12, 2016 · Driver assistance, Electrical · TX

Driver's seat lurches forward and backwards at random times while driving. This happens regardless of speed, brake/ acceleration/ cruise control, type of road, direction or movement etc. Often times while the car is parked or in motion, the seat will not move at all in any direction. Also, the ABS, traction control, and downhill light have all been turning on and off at random, and, while parked and without provocation, my speedometer needle began jumping. Less important, the driver's seat A/C does not work consistently which leads me to believe this is an electrical malfunction, however, the multiple times I have taken this vehicle into the "service center", the mechanics said they could not recreate the problem and sent my broken car home, so the official reason is unknown. I am only 5'2" so this has caused me considerable problems with suddenly not being able to reach the pedals, and has almost resulted in numerous accidents.