Technical Service Bulletins (TSBs) for the 1989 Sonata are official communications between Hyundai & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

    ENGINE AND ENGINE COOLING:ENGINE

    • TSB #97110120014

      Date Announced:
      NOV 01, 1997
      NHTSA ID:
      #54161

      PROVIDED PROCEDURES FOR THE INSTALLATION OF A BLOCK HEATER. *YC Read More »

    • TSB #97100120012

      Date Announced:
      OCT 01, 1997
      NHTSA ID:
      #54113

      SHOP MANUAL CORRECTION ON CYLINDER HEAD BOLT TORQUE SPECIFICATION. *YC Read More »

    POWER TRAIN:AUTOMATIC TRANSMISSION

    • TSB #5NP-S9D9P-10

      Date Announced:
      SEP 02, 2016
      NHTSA ID:
      #10082725

      THIS BULLETIN PROVIDES INFORMATION ON COMPONENTS, ATTRIBUTES, AND PRECAUTIONS OF THE 7-SPEED DRY-TYPE DUAL CLUTCH TRANSMISSION (DCT). Read More »

    POWER TRAIN:DRIVELINE:DRIVESHAFT

    • TSB #9740002

      Date Announced:
      JAN 01, 1997
      NHTSA ID:
      #51905

      SHIFT CONDITION CAUSED BY SHORT CIRCUIT IN INHIBITOR SWITCH. *TW Read More »

    ELECTRICAL SYSTEM

    • TSB #20-EE-003H

      Date Announced:
      APR 23, 2020
      NHTSA ID:
      #10174808

      This bulletin provides information on identifying dealer stock vehicles with either: ⿢ A Battery SOC alert - low Battery State of Charge (SOC) at or below 50%. ⿢ A 30 Day alert - vehicle has not started and reported an SOC in 30 days. Read More »

    LANE DEPARTURE

    • TSB #19-BE-011H-1

      Date Announced:
      NOV 04, 2019
      NHTSA ID:
      #10169370

      The Blind Spot Detection (BSD) or Blind-Spot Collision Warning (BCW) is a system that measures the speed of and distance from the following vehicles by using two magnetic wave radar sensors attached in the rear bumper. Read More »

    BACK OVER PREVENTION

    • TSB #19-BE-011H-1

      Date Announced:
      NOV 04, 2019
      NHTSA ID:
      #10169370

      The Blind Spot Detection (BSD) or Blind-Spot Collision Warning (BCW) is a system that measures the speed of and distance from the following vehicles by using two magnetic wave radar sensors attached in the rear bumper. Read More »

    EQUIPMENT

    • TSB #20-EE-003H

      Date Announced:
      APR 23, 2020
      NHTSA ID:
      #10174808

      This bulletin provides information on identifying dealer stock vehicles with either: ⿢ A Battery SOC alert - low Battery State of Charge (SOC) at or below 50%. ⿢ A 30 Day alert - vehicle has not started and reported an SOC in 30 days. Read More »