2008 Sonata ESC issues
#1
07-30-2019, 11:11 AM
2008 Sonata ESC issues
I have a low mileage 2008 Sonata. Bought it three years ago with 5,200 miles on it, for my daughter, and it currently has 40K on it.
At this point, my daughter reported that there was a grinding sound and the car lurching. It was ESC actuation on dry roads. I took it to the dealer, and they said it required a Yaw Rate sensor. That was replaced, and the issue remained. In fact three different Yaw Rate sensors were tried. The next step they said was to replace the HECU. That was done using a know good used HECU, and the unit was coded to the car. This, however did not remedy the issue. It was driven two hundred yards, and the ESC actuated, and then tripped off. It was immediately returned to the dealer and when on the diagnostic tool, the codes were cleared. While sitting in the service bay, the ESC again tripped off on yaw rate sensor. The dealer stated it was a wiring issue. At this point, the harness has been checked, and all continuities and resistances are within Hyundai guidelines. The ESC still randomly chatters until it codes on Yaw Rate sensor. At that point, with ESC disabled, the car drives normally, and the ABS function is still intact.
Don't know if this matters, but the TPMS light has been on as well, and doesn't go out. All tire pressures are good.
Has anybody on this forum experienced similar issues, and/or knows what the resolution is? My dealership does not seem to have the ability to fix this problem.
2008 Sonata
2014 Santa Fe
2008 Entourage (no longer)
2010 Kia Optima
2014 Kia Sorento.
At this point, my daughter reported that there was a grinding sound and the car lurching. It was ESC actuation on dry roads. I took it to the dealer, and they said it required a Yaw Rate sensor. That was replaced, and the issue remained. In fact three different Yaw Rate sensors were tried. The next step they said was to replace the HECU. That was done using a know good used HECU, and the unit was coded to the car. This, however did not remedy the issue. It was driven two hundred yards, and the ESC actuated, and then tripped off. It was immediately returned to the dealer and when on the diagnostic tool, the codes were cleared. While sitting in the service bay, the ESC again tripped off on yaw rate sensor. The dealer stated it was a wiring issue. At this point, the harness has been checked, and all continuities and resistances are within Hyundai guidelines. The ESC still randomly chatters until it codes on Yaw Rate sensor. At that point, with ESC disabled, the car drives normally, and the ABS function is still intact.
Don't know if this matters, but the TPMS light has been on as well, and doesn't go out. All tire pressures are good.
Has anybody on this forum experienced similar issues, and/or knows what the resolution is? My dealership does not seem to have the ability to fix this problem.
2008 Sonata
2014 Santa Fe
2008 Entourage (no longer)
2010 Kia Optima
2014 Kia Sorento.
Last edited by jsrfo; 07-30-2019 at 11:14 AM.
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