When should I change transmission fluid

welcome to USA forum. NO IGNIS here, zero.
you and your car are not here
so tell me , how can we tell you where to go.
that be amazing.
now how to do it?, its done with a full flush power system.
that you dont have or can afford to buy, (right?)
its is not anything like doing axles or engines.
totally different. (google how to full flush a transmission) learn.

Means that you have 24 percent of life left on your transmission fluid.say it's good for 30,000 miles,you would have almost
7500 left till it needs changing.

To flush the transmission is not something you can do yourself you have to some special equipment. You can, however change the fluid. There is no drain plug to drain the transmission like there is with the engine oil. If you have been driving this for 6 years and have never changed the fluid and filter, changing it now is probably too late and the damage is done. To drain the fluid you have to remove the pan on the bottom of the transmission. It is very messy so have a large clean pan to catch it in. you will need a new filter, but you can reuse the gasket if it's not damaged. If the fluid is black and has a burned smell you transmission is on it's way to being dead.

yes, it is always recommendable to change the transmission fluid in cars and trucks, look at your owners manual , it will tell you when you should have changed the fluid and how often.

There is none of what you ask, no lights etc

You need to change the fluid in the trans and
power steering every 3 years or not more than
30,000 miles. If you don't the fluid breaks down from
the heat. Basically a death sentence and eventually,
yes, you will have symptoms, but too late by then

$120.00

My 1997 Caravan manual states that the trans fluid capacity is 8.5 quarts. However, in the transmission oil change section, it says to drop the pan, drain the oil, replace the filter and add 4 quarts of new fluid. This tells me that the torque converter is not draining so you are in fact, only changing "half" of the transmission fluid.

Automatic Transmission Fluid ( Mercon ) 17.7 qts.

There no tranny drain plug, you must drop the pan to change the fluid and filter. Standard fluid is fne. I believe Dextron3 but double check with the autoparts store (tell them you have a volvo) and they can lookup the correct type of ATF.

If you are not having problems with your transmission and if your transmission fluid is still red and full I would recommend not changing it. I know you are supposed to change it every 50K plus miles or so but in my experience it can just cause problems. I have and have many friends that had transmission problems after changing the fluid. But that is just my opinion...

7 litres.... but keep in mind that's with the torque converter dry. so just keep adding fluid and checking the dipstick level.