Skip the auto shop - Our mechanics make house calls

Q: Advice on changing automatic transmission fluid on a 2003 Toyota Vios

asked by on

I own a 2003 Toyota Vios. I'm concerned about the automatic transmission fluid. I've checked the oil and it's still red. So, when should I change the fluid next? Also, is it okay to keep your car idling for one or two hours with the AC turned on?

A: If your cooling fans work fine and the temp...

If your cooling fans work fine and the temperature runs fine, then yes. The police leave their idle on all the time. But you've got to make sure your cooling fans are working because, if they aren't working, and you do that, you can overheat the engine. So make sure your cooling fan is working and if there are two, make sure they are both working.

As for the automatic transmission fluid, I would advise changing the fluid maybe every 40,000 miles. I would definitely change it now and since it is a Toyota. I'd also advise you to stick with the Toyota fluid. They don't cost that much. At the dealer's, they are maybe $4.50 a quart so you aren't paying that much more money. If you want to have a technician replace the transmission fluid for you, a certified mechanic from YourMechanic can come to your home or office to perform this task.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How do I turn on the fog lights?

The fog lights can improve visibility in adverse driving conditions, namely rain and fog. To turn on the fog lights, rotate the fog light switch to the on position (the fog light switch is located next to the light switch,...

Q: My truck won't shift to reverse

There are a few things that can cause this. Check the transmission fluid level to see if it is low. Sometimes low transmission fluid levels will prevent the transmission from shifting into gear. If you still have forward gears, but...

Q: What Do Transmission Error Codes Tell You?

Using transmission error codes is a necessary procedure for a transmission technician since automatic transmissions have been computer controlled for over 20 years. The transmissions currently in use are very different to diagnose and repair than transmissions from decades ago....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.