Transmission Electro-Hydraulic Control Module (TEHCM) is the unit that combines functions of transmission control module, pressure and temperature switches, and valve body solenoids into a single unit. Every year, more and more manufacturers are making use of the TEHCM technology to consolidate various functions and to incorporate a single unit into the transmission as opposed to using four or five different units. The increased usage of TEHCM technology has led to a growth in the demand for replacement aftermarket TEHCM units.
Many auto mechanics and vehicle experts claim that the original equipment manufacturer (OEM) version of TEHCM usually fails at 80,000 to 120,000 miles. The different causes of failure can be:
- Debris contamination inside the unit;
- Deterioration of solenoid; or
- Corrosion of the switch.
If the TEHCM unit of your car is faulty, you will be able to notice symptoms like delayed or harsh shifting, and inability to shift gears in worst cases. The best solution is to replace the OEM TEHCM installed in your vehicle with high-quality aftermarket alternatives that are durable and long lasting.
Benefits of Using Aftermarket TEHCM
- All aftermarket TEHCM units are fully remanufactured and thoroughly tested for quality and durability.
- All the gaskets, seals, and grommets will be replaced.
- They usually feature plug-and-play design, as each of the units will be programmed to match the vehicle identification number.
- They use the latest and up-to-date software calibrations.
- They use upgraded material while remanufacturing.
The OE fix repair solutions offered by aftermarket vehicle parts dealers will help you to improve the original transmission control module of your car. Most of the original TEHCMs make use of a metal called Kapton for the pressure switch film. Experts say that this material is not durable enough to maintain its form when the unit is contaminated.
Usually, the aftermarket TEHCMs are remanufactured completely making use of a material called Polyether Ether Ketone (PEEK). This is a type of plastic that is much resistant to thermal decomposition and the material is capable of retaining its form when it comes in contact with waste and debris. This is why many vehicle owners prefer aftermarket replacement TEHCMs than the OEM ones.