NHTSA (USA)High Risk
1999 HYUNDAI ELANTRANHTSA Campaign #99V178000
The official notice
Defect
VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH AUTOMATIC TRANSMISSIONS. THE AUTOMATIC TRANSMISSION PRESSURE CONTROL SOLENOID VALVE SEALS DO NOT REMAIN SUFFICIENTLY ELASTIC, RESULTING IN TRANSMISSION FLUID LEAKAGE. THIS LEAKAGE CAN RESULT IN REDUCED PRESSURE APPLICATION TO THE CLUTCHES, BRAKE, AND KICKDOWN SERVO, ALLOWING THEM TO SLIP.
Safety Risk
SUCH SLIPPAGE CAN CAUSE PREMATURE DETERIORATION OF THE FRICTION ELEMENT SURFACES AND COULD CAUSE THE VEHICLE NOT TO ACCELERATE, OR NOT ACCELERATE AS EXPECTED, WHEN THE DRIVER PRESSES THE ACCELERATOR PEDAL.
Remedy
DEALERS WILL REPLACE THE PRESSURE CONTROL SOLENOID VALVE.
Updated June 10, 2026