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sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 22674
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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2002 Hyundai Accent. Stays in High Gear. Never shifts down

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2002 Hyundai Accent. Stays in High Gear. Never shifts down even when stopped. Starts off in High Gear

Hello and welcome to JustAnswer!


There are quite a few things that can cause this.


When the transmission control module sees a problem it thinks can cause potential damage to the trans it can lock you in a single higher gear. When this happens it sets fault codes which are needed as a starting point for diagnosis.


The problem could be internal in the transmission, one of the shift or pressure control solenoids, the range sensor, temperature sensor, speed sensors, wiring between components or the TCM itself.


If all fuses are ok then the next step will be to see what fault codes are stored in the TCM. This will need to be done with a scan tool or code reader, most larger parts stores like Autozone will read fault codes for free in the parking lot. Once you know what codes are stored then you can diagnose it from there.

sprinkles08 and 2 other Car Specialists are ready to help you
Customer: replied 4 years ago.

I never thought to check the darn fluid and heard that can also be it! Dont know if the engine is supposed to be running or not when checking the Tranny Fluid?

Yes, the engine will need to be running to check the fluid and most likely it will need to be in park, the dipstick will say whether it should be checked in park or neutral. Low fluid level probably wouldn't cause the symptoms you are having but it doesn't hurt to check.