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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Clunking noise and jolting when put in reverse

Many different faults can cause the vehicle to clunk and not be able able to shift out of gear. Transmissions use the fluid to help change gears, and when fluid is low or dirty, it can cause many issues with...

Q: I have a 2002 Chrysler 300m that had been sitting up for a year. I replaced the rack and pinion but when backing up steering is hard. Plus I have a P0740 code.

Hi there. The issue with the steering being hard seems to be with the pump still having air in it. Start the engine and open the bleed valve slightly. Turn the steering wheel several times from left to right and...

Q: Coolant reserve tank removal.

Hi there If you've never completed this type of repair, you should purchase a service manual for your 2003 Cadillac DeVille which will give you detailed instructions on how to correctly remove the coolant reservoir.

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.