Hyundai Archives - UnderhoodService
Hyundai Breaks Ground on New EV Production Plant in South Korea

Hyundai’s new EV plant prioritizes employee comfort, becoming the hub for EV mobility.

Hyundai, KIA Develop GPS, Camera Connected Shift System

The vehicle can automatically shift to the optimal gear after identifying road and traffic conditions ahead.

Major Multi-Carline Software Release Available From Autologic

New software releases are available for DrivePro ES and DrivePro Users.

VIDEO: Theta Engine Crankshaft Recall And What It Means To The Technician

Andrew Markel discusses a recall from Hyundai on its Theta engine, and how technicians can determine whether the engine has been inspected or replaced. Sponsored by Auto Value and Bumper to Bumper.

Hyundai/Kia Theta Engine Inspection Essentials

The Hyundai Theta engine appeared in 2006 Sonata models and is going strong to this day in naturally aspirated and turbocharged forms in various Hyundai and Kia applications. The one area of the engine that has been the source of more TSBs and tech tips has been the bottom end of the engine and lubrication system.

Hyundai Turbocharged Theta And Gamma Engines: Maintenance And Minimizing Damage

Hyundai has two four-cylinder engines that use a turbocharger. The Gamma and Theta turbocharged engines were introduced in 2010 for many Hyundai cars and trucks. These engines also have direct injection, which makes them even more efficient. Knowing the basics of how all turbocharged systems work can serve you well in solving problems with turbo-equipped Hyundais. A good scan tool that can graph boost pressure and a smoke machine can also improve diagnostic procedures.

Hyundai Tech Tip: Engine Vibration Due To Misaligned Timing Marks On The Oil Pump

This bulletin provides information regarding the proper indexing of the timing marks of the Oil Pump Module during in-vehicle installation on vehicles equipped with Theta four-cylinder engines. If the Oil Pump Module timing marks are improperly indexed, abnormal engine vibration may result. Follow the service information outlined in this bulletin whenever a new or existing Oil Pump/Balance Shaft Module (BSM) is being installed.

Understanding Hyundai TPMS

Hyundai TPMS has an auto relearn function, but if a shop is initializing a sensor or doing a manual relearn, you will need a TPMS tool that can capture the sensor IDs and program them into the TPMS module.

Timing Chains In Hyundai Engines

Although Hyundai uses a single timing belt on its 2.7L V6 engines, its 3.3L, double-overhead camshaft engine is equipped with one timing chain for each camshaft and one drive chain for the oil pump. At first glance, a timing chain design allows engineers to shorten the overall length of the engine and reduce rotating friction.

timing chain hyundai featured
Diagnosing An Intermittent, Poor-Run, Hard-Start Complaint That Stumped The Local Body Shop

This month we’re going to be looking at an intermittent poor-run, hard-start complaint on a 2012 Hyundai Sonata. This car came to us by way of a body shop with which we work closely. Like most good working relationships, we are always willing to help these guys with our expertise, and they are wonderful about

2013 Hyundai Sonata
Hyundai: Engine Oil Pump Replacement Guidelines During Engine Replacement

Applicable Vehicles: All models Follow the guidelines outlined in this bulletin to install a new oil pump after an internal engine repair or engine short block replacement. Note: A new or remanufactured engine sub­assembly (long block) is shipped with a new oil pump already installed, so this bulletin does not apply to the installation of