How to change automatic transmission fluid | AUTODOC tips

How to change automatic transmission fluid on a car – replacement tutorial

You will need:

                      a torque wrench
                    
                      an automatic transmission filter
                    
                      automatic transmission fluid
                    
                      an automatic transmission pan gasket or new transmission pan assembly
                    
                      a new drain plug with a seal
                    
                      new fastening bolts (if the old ones are in poor condition)
                    
                      a container for the drained transmission fluid
                    
                      a cleaning agent for car parts
                    
                      a funnel or syringe
                    
                      goggles and gloves.

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Please note!

If your automatic transmission has a dipstick, just drop a little fluid on a paper towel and observe the fluid colour.
Bright colour: the fluid is in normal condition.
Darkened fluid: there is a slight contamination.
Pale fluid: there is water or coolant in the transmission.
If your car has no dipstick, change the fluid at the intervals stated by the car manufacturer in the car owner's manual. Warning! For models with no ATF dipstick, please refer to your car's service manual for the proper method of checking the fluid level and replacing it.

1.

Warm up the gearbox by driving about 5 km.
2.

Lift your car or use an inspection pit.
3.

Switch off the engine, shift the gear to neutral, and apply the handbrake.
4.

Place the container under the transmission pan.
5.

Unscrew the drain plug and wait for the transmission fluid to flow out.
6.

Unscrew the transmission pan bolts and pour out the rest of the fluid.

Caution!
Be extremely careful when removing the unscrewed transmission pan. You could spill the fluid over yourself.
7.

Remove the automatic transmission filter.
8.

Clean the pan and magnets. Prepare the mating faces of the transmission case and the pan: remove the old sealant and degrease the surface.

AUTODOC recommends:
Inspect the gearbox magnets: a large amount of metal chips indicates wear of the assembly.
9.

Install the new filter.
10.

Install the new transmission pan gasket.
11.

Install the pan and tighten the fastening bolts to the torque recommended by the car manufacturer.
12.

Install the new drain plug with the O-ring.
13.

Add the required volume of fresh transmission fluid using a funnel or syringe.

Warning!
Only use the fluid specified in your car owner's manual.Do not mix different types of transmission fluid.
14.

Make sure that the fluid level is not above the "Hot" mark. This should be checked with the engine running in neutral.

Please note!
Since this type of change leaves up to 3 litres of old fluid in the AT valve body, the same procedure should be carried out again after 5,000–15,000 km.

Comments – 3

@user_2821457

13.08.2024 11:46

Member

How many atf fluid for hyundai reina 1.4, liters?
@user_2821457

13.08.2024 11:47

Member

I mean, how many liters atf fluid ?
- Jessica_L
  
  16.10.2024 11:12
  
  @user_2821457
  
  Moderator
  
  To answer your question, we need more data about your car. Contact our support team via chat and we will definitely try to answer your question.