I have a Nissan Serena 2003 model with CVT gearbox. It wount engage 1,2 when moving in low speed, or uphill.when behaving this way, its fails to reverse,or reverse in difficulty.

SOURCE: 2001 nissan serena 4wd the

it sounds like it is overheating have you changed the fluid recently? does it have a transmission cooler? 
These CVT transmissions were never built to be capable of extended offroad driving unless you have the necessary coolers etc

SOURCE: where does the coolant go in my nissan serena.

The container you are talking about is called the overflow reservoir and yes, that is where you add the coolant. Make sure that your car has been off for a couple hours and is nice and cool before you try to add any, when it's hot it can build pressure and spray coolant or steam out when you unscrew the cap.

gord storey

• 477 Answers
• Posted on May 09, 2009

SOURCE: i need to refill my gearbox oil of my 1996 model nissan sentra

I assume its a standard transmission.
Should be a threaded plug on the top of trans , or 1/2 way up on the side.
If auto trans , add fluid through dipstick tube.

SOURCE: what type of gearbox auto transmission oil?

dexron 3 .
better yet use synthetic from BG which surpasses all transmission fluids and warranty requirements.

SOURCE: 1997 Jaguar XK8 "Gearbox fault" (Auto) doesn't want to go

I'm not familiar with the jag but my ford is similar( no dipstick). I'm led to believe these are designed to prevent overfilling, which can blow out the seals. I undo the top pipe which goes to my radiator to cool the trany fluid, then get a 1/2 metre length of plastic tube to fit between the disconnected pipe and a 1 litre bottle of fluid. I then squeeze the fluid in that way....no more than a litre at a time, then try driving it again..Hope this helps.