12.7% of complaints about the 1999 Hyundai Elantra came in the first year, which is unremarkable for a 1999 vehicle — around the middle of the 201 model-years on record. The median complaint arrives at 3.4 yr in service. The most-reported system is power train (36 complaints), typically at 2.7 yr or about 88,200 miles.
VEHICLE DESCRIPTION: SOME SONATA VEHICLES EQUIPPED WITH 2.5 LITER V-6 ENGINES AND ALL ELANTRA MODEL VEHICLES MAY HAVE EXPERIENCED INTERMITTENT LOW-SPEED ENGINE STALLING, WHICH COULD OCCUR IF THE MAF (MASS AIR FLOW) SENSOR ELECTRICAL SIGNAL IS INTERRUPTED AS A RESULT OF ENGINE VIBRATION TRANSMITTED TO THE MAF SENSOR CONNECTOR WIRING HARNESS.
THIS CONDITION CAN CAUSE THE ENGINE TO STALL, INCREASING THE RISK OF A CRASH.
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.
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.
TRANSMISSION WOULD MAKE CLUNKING/SHATTERING AND WHINNING NOISES. TOOK TO DEALER & TRANSMISSION REPLACED WITH NEW ONE. THE WHINNING & SHATTERING NOISES STILL EXIST. HAD THE FINAL DRIVE UNIT (TRANSAXLE) & BEARINGS REPLACED. IT HAD A HIGH PITCH WHINE. AFTER REPLACEMENT, NOISE STILL EXISTS, BUT NOW IT BUCKS. *AK
TRANSMISSION WOULD MAKE CLUNKING/SHATTERING AND WHINNING NOISES. TOOK TO DEALER & TRANSMISSION REPLACED WITH NEW ONE. THE WHINNING & SHATTERING NOISES STILL EXIST. HAD THE FINAL DRIVE UNIT (TRANSAXLE) & BEARINGS REPLACED. IT HAD A HIGH PITCH WHINE. AFTER REPLACEMENT, NOISE STILL EXISTS, BUT NOW IT BUCKS. *AK
WHEN SHIFTING THE TRANSMISSION GEARS INTO DRIVE, VEHICLE WOULD HESITATE BEFORE CATCHING OR ACCELERATING. HAPPENS ONLY WHEN PRESSURE IS APPLIED ON PEDAL. HAVE TAKEN TO DEALER FOR REPAIRS. *AK
WHILE DRIVING 20 MPH HAD A FRONTAL IMPACT WITH ANOTHER VEHICLE COMING AT 55 MPH, AND DRIVER'S/PASSENGER'S AIRBAGS DID NOT DEPLOY, WHICH DID NOT PROTECT THE OCCUPANT IN THIS ACCIDENT. CONSUME R HIRED AN APPRAISER WHO SAID THAT THE AIRBAGS SHOULD HAV E DEPLOYED, BUT THE HYUNDAI CLAIMED THART AIRBAGS SHOULD NOT HAVE DEPLOYED. PLEASE PROVIDE FURTHER INFORMATION AND VIN#. *AK