Harsh Engagement from Transmission at Low Speeds – 2014 Kia Optima Hybrid

PS241

 

SUBJECT:

HARSH ENGAGEMENT FROM TRANSMISSION AT LOW SPEEDS

 

If you encounter a customer complaint relating to harsh engagement from the transmission at low speeds, check the HPCU/HSG coolant reservoir is at the proper level and that no leaks are present (Fig. A). Also, check the Electric Water Pump (EWP) operation using the GDS “Actuation Test”. Do not rely on the “Success” message displayed on GDS as proof of proper pump operation. Listen for the pump noise coming from the right front fender area in order to confirm operation. If the EWP makes no noise while in operation, diagnose further and repair accordingly.

 

HPCU/HSG coolant reservoir

 


 

 


 

SaleBestseller No. 1
Prestone MAX Asian Green 50/50 Antifreeze Automotive Coolant, Pack of One
  • Includes patented Prestone CorGuard technology
  • Provides Extreme Temperature Protection from the worst of winter deep freezes and scorching summer heat.
  • Helps a vehicle's cooling system run more efficiently and last longer
  • Contains Bitterant
SaleBestseller No. 2
Zerex Asian Vehicle Blue Silicate and Borate Free 50/50 Prediluted Ready-to-Use Antifreeze/Coolant 1 GA
  • 5 year/150, 000 mile . Silicate-free, long-life, phosphate Hybrid Organic Acid Technology chemistry
  • Formulated to replace the OEM fluid in Asian make vehicles such as Honda, Nissan, KIAeBay logo, Hyundai and others requiring a blue, silicate free HOAT antifreeze/coolant
  • The long life formula provides protection for all cooling system metals from rust and corrosion. The silicate free, borate free formula helps protect against harmful scale and deposits
  • Meets the following OEM and industry specifications: Hyundai/KIAeBay logo MS 591-08, Mitsubishi ES-64217, JIS K 2234-1994, Ford WSS-M97B55-A, ASTM 3306, ASTM D4985, Federal Specification A-A-870A
  • Contains 30 – 50 ppm of denatonium benzoate as a bittering agent
Bestseller No. 3
PEAK OET Extended Life Green Concentrate Antifreeze/Coolant for Asian Vehicles, 1 Gal.
  • 1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.
  • PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components
  • DESIGNED FOR ASIAN VEHICLES: Recommended for use with Hyundai, KiaeBay logo, Genesis, Infiniti, Nissan, Mazda, Mitsubishi, Subaru, and Suzuki vehicles that require a GREEN Phosphate-enhanced Organic acid technology (POAT) formula
  • GUARANTEED: When installed as part of a complete flush and fill, PEAK guarantees this coolant will provide service life protection of up to 400,000 miles or 15 years.
  • CONCENTRATED FORMULA: Ideal for flushing, filling, or topping off your cooling system
Bestseller No. 4
PEAK OET Extended Life Red/Pink 50/50 Prediluted Antifreeze/Coolant for Asian Vehicles, 1 Gal.
  • 1 GALLON ENGINE ANTIFREEZE/COOLANT: Fully compatible with other extended life antifreeze/coolants. This item contains a bittering agent called Denatonium Benzoate.
  • PROTECTS: Advanced formulation prevents rust & corrosion protecting all engine cooling system components
  • DESIGNED FOR ASIAN VEHICLES: Recommended for use with Lexus, Scion, and Toyota vehicles that require a RED/PINK Phosphate-Enhanced Organic Acid Technology (POAT) formula
  • GUARANTEED: When installed as part of a complete flush and fill, PEAK guarantees this coolant will provide service life protection up to 150,000 miles or 5 years.
  • 50/50 PREDILUTED FOR QUICK TOP OFFS: Already diluted to make topping off your cooling system a breeze
SaleBestseller No. 5
Zerex Asian Vehicle Red Silicate and Borate Free 50/50 Prediluted Ready-to-Use Antifreeze/Coolant 1 GA
  • Formulated to replace the OEM fluid in Asian make vehicles such as Toyota , Lexus , Scion and others requiring a red, silicate free HOAT antifreeze/coolant
  • 5 year/150, 000 mile . Silicate-free, long-life, phosphate Hybrid Organic Acid Technology chemistry
  • The long life formula provides protection for all cooling system metals from rust and corrosion. The silicate free, borate free formula helps protect against harmful scale and deposits
  • Meets the following OEM and industry specifications: JIS K 2234-1994, Hyundai/KIAeBay logo MS 591-08, Mitsubishi ES-64217, Ford WSS-M97B55-A, ASTM 3306, ASTM D4985, Federal Specification A-A-870A
  • Note: Please check the vehicle specification before purchasing the item.

Last update on 2026-06-19 / Affiliate links / Images from Amazon Product Advertising API


 

 


 

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