Best Method to Reset Transmission Control Module Mazda 3

The TCM or Transmission Control Module is a highly active part to help interact with the transmission system and engine. Sometimes a driver can face issues in the Mazda 3 truck performance due to TCM system failure.  

A sick truck can be solved with a reset of the faulty part if doing it in the correct way. For that, I’ll give insight on the procedure so that you know how to reset transmission control module Mazda 3. Be sure to match the symptoms first before going through the steps.

Continue reading to find out the directions…

How To Reset Transmission Control Module Mazda 3?

Find out the sickness through signs and then reset the TCM by triggering the main component of the Mazda 3 truck.        

The Mazda 3 TCM reset is a bit tricky method that might need a little time, energy, and patience. And, it can’t be explained in 3 lines since there are a lot of things you need to do.  

For Your Information: The location of TCM is below the battery tray or exactly above the car engine.

Besides, the steps would be pretty dissimilar to resetting the Ford TCM unit. In case you own it, be sure to check how to reset Ford transmission which I think will help. Now, let’s get familiar with the symptoms and step-by-step guide. 

Symptoms Of Faulty TCM Unit of Mazda 3

Are you familiar with the early signs the transmission control module Mazda 3 shows when it immediately needs a factory reset? If not, take note of the following symptoms before knowing how to reset TCM Mazda 3.  

  1. Not shifting the gears smoothly or hesitating.
  2. The engine warning light turns on.
  3. Suddenly gear changes to neutral or get stuck.
  4. Doesn’t change to lower gear.
  5. Speeding up issues.
  6. Spend a lot of fuel.

Step-by-step Procedure: 

  • Detach the terminals some hours beforehand to help it drain the charge.
  • Turn on your engine like a cold start. Then, hold the brake using one foot and start the engine, by shifting the transmission from the park (P) to the first gear (L) of your truck. Do this 3-4 times.
  • For 5 minutes, drive the car at a low speed (not above 15.55 MPH) with slow acceleration.
  • Slow down so that it automatically goes to a full stop position. Do not use the brake. Idle the truck for 1-2 minutes.
  • Let the truck be like this for 1 minute.
  • Place your one foot on the brake and shift the transmission from the park to the low gear. Again, do the same procedure then drive the truck for 5-6 minutes at a higher speed (not above 50 MPH).
  • Then, decelerate the truck naturally without pressing the brake pedal until it stops.
  • Idle the car for a couple of minutes. Do not try hard acceleration after that or brake. Done resetting!

Note: The above method is best for the 2010 Mazda 3 TCM reset and other models.

Frequently Asked Questions

1. How much does it cost to get a transmission control module fixed?

To fix any issue with the TCM unit, it will take between $700 to $800 for an expert. However, you might need to count some extra bucks for tax, fees, or location reasons.

2. How long does it take to replace a transmission module?

It will take around 1 to 2 days to change the transmission module on average. However, sometimes the time limit can be fast or late depending on the repairer’s skill and intelligence.

3. Do all cars have a transmission control module?

Nearly all modern cars own a TCM unit instead of a mechanical or hydraulic control unit. But in older models, some mightn’t have it.

Mazda 3 Transmission Control Module Change, Code U0101

Wrap Up

Done explaining how to reset transmission control module Mazda 3 which is pretty simple TBH. While it can be seen as puzzling at first, trust me you’ll do great if following the directions without skipping a beat.

But if, this feels hard to try in the real world, then be sure to take your car to the local garage to make a reset which will take less effort and time with expert skills. Good Luck!

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