Set the setting to full blast on air conditioner and allow air ventilation from outside air

Do It Yourself (DIY): Replace Toyota Vios’s Air Conditioner Panel Bulbs

Below is the guideline to DIY replace all the bulbs in Toyota Vios’s Air Conditioner panel. Read the tips before you get started the DIY project!

Bulb size that required: Bulb size for AC panel: T4.2

T4.2-1 bulb

T4.2-1 bulb

T4.2-2 Bulb

T4.2-2 Bulb

 

AC Panel bulb replacement

Before we get started, turn the temperature knob switch to OFF position, fan speed to ‘0’ and leg air con controller to only air con (basically everything turned in OFF position).

Next, we remove the V panel starting from the bottom part.
Toyota Vios Panel

Remove 3 pins from each side starting from the bottom to top of the dashboard; you may need to apply some force to pull it out in your first attempt.

Toyota Vios Panel Uncovered

Toyota Vios Panel Uncovered

There are clips behind every dial; you may need a small screwdriver to make it out. An alternate way to remove them, push the dials from the side as shown in the picture below, either push from the left or vice versa.

Toyota Vios Panel Uncovered

Toyota Vios Panel Uncovered

I shall start from air-con speed dial on the left side first.

Remove the cable connector by pressing the middle and pull it out as shown on below.

Remove Connector at Toyota Vios Panel AC Knob

Remove Connector at Toyota Vios Panel AC Knob

Continue to remove the next cable behind which controls the internal and external air. Use a screwdriver or your car key to push into the arrow direction as shown on picture.

Remove Connector at Toyota Vios Panel AC Knob

Remove Connector at Toyota Vios Panel AC Knob

Once it is being removed, you can spot the bulb straight away. Use a flat head screwdriver and turn it anti-clockwise to loosen the bulb and remove it.

Be sure to plug the 1st cable you removed at the start to test whether the LED is working before you reassemble it back!

Turn on your car light will do. Just plug and play, if it doesn’t work, means the positive and negative polarity are placed opposite; Just turn it 180 degrees and test it again.

Back of Toyota Vios Panel AC Knob

Back of Toyota Vios Panel AC Knob

Moving on to the 2nd dial (leg air con controller), give a gentle press on the arrow pointed part and the cable can be removed easily. Take note DO NOT remove the behind part! And make sure it is turned to the left end before you continue to next step.

Remove the Wire of Toyota Vios Panel AC Knob

Remove the Wire of Toyota Vios Panel AC Knob

Push out the clips from all 4 sides using a screwdriver. Try not to damage or break the clips.

Push of 4 clips from Toyota Vios AC Knob

Push of 4 clips from Toyota Vios AC Knob

Once it is removed, you should see the gears and the bulb. Now here is the tricky part, look closely to the gears, you should notice that there is a ‘V’ shape in both gears, be sure they are at the same line when you reassemble it.

V shape if both gear of Toyota Vios AC Knob

V shape if both gear of Toyota Vios AC Knob

Now, remove the 4 clips around it with finger nail as highlighted in the picture. After it is removed, you will be able to reach the bulb and remove it. Do remember to connect the cable to test the LED before reassemble.

Remove 4 clips of Toyota Vios AC Knob

Remove 4 clips of Toyota Vios AC Knob

Now comes the last temperature dial, removing the cable is just the same way as previous dial, gently push down the button and release it as shown on the picture.

Remove wire of Toyota Vios AC Knob

Remove wire of Toyota Vios AC Knob

4 pins, 1 in each side, remove all of them and the black and white plastic will be separated as shown below. You can actually see the bulb and the gear too.

Remove wire of Toyota Vios AC Knob

Dissemble the Toyota Vios AC Knob

Dissemble theToyota Vios AC Knob

Dissemble theToyota Vios AC Knob

Again, make sure both gears are in the same line under ‘V’ marking; also ensure that the temperature is set to OFF.

Dissemble the Toyota Vios AC Knob

Dissemble the Toyota Vios AC Knob

Remove 4 clips all around each sides and both base will be separated. Turn it around and you will see the bulb right below the knob.

Dissemble the Toyota Vios AC Knob

Dissemble the Toyota Vios AC Knob

Dissemble the Toyota Vios AC Knob

Dissemble the Toyota Vios AC Knob

The DIY project completed! The Toyota Vios AC panel is shine brighter like a diamond~

Brighter Toyota Vios AC Panel Knobs

Brighter Toyota Vios AC Panel Knobs

Tips

  • Mark a small note on the T4.2 base for easy reference; at least you know which side it is when you want to rotate the LED if it doesn’t light up.
tips1

tips 1

  • If the LED doesn’t light up in both directions after you swap, which means the metal piece is not in contact with the copper circuit. You may use a screwdriver and push out the wire so that the wire has bigger contact point.
tips2

tips 2

  • If you want to purchase a T5 LED, make sure you purchase those with a plastic leg and the shape is same as T5 bulb. The type I bought could not fit in nicely and it can move easily, I couldn’t tighten it even after pushing it fully in. They do not share the same shape and design.
tips3

tips3

Result:

Toyota Vios Glow Gear Knob and bright AC panel

Toyota Vios Glow Gear Knob and bright AC panel

Credit this DIY article and photos to Henry 217 :)

Checkout the another article from Henry about replacing the Gear’s bulb at here: http://www.carreviewsncare.com/do-it-yourself-replacement-for-toyota-vios-gear-panel-bulb/

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