Engine check light

First make sure that the petrol filler cap is on tight (if its a non cap type of filler that is okay). get a scan done and report back what the code is so we can check it out and advise what has caused it to come on, start here.

Okay, will do ASAP.

Did the scan and its showing that the transmission range sensor is the prob,but prior to that when the machine was install at first the check light came off but came back after a few test drive what do u think?

i would not expect that the range switch would be the cause, i would clear the code and do a general tune and see if that improved things, a faulty range switch would normally stop the engine starting, i would also get an on demand transmission scan done, this will look deeper into the transmission electrical system, just in case there is a deeper problem there.

Ok

Sometimes when I try to put the car in drive mode or just moving the shift any at all its tough and the sport mode button doesn't work??

Yes it sounds like the transmission range sensor is out and needs to be replaced. Here is a guide to help you test to confirm the failure.

https://www.2carpros.com/articles/how-a-neutral-safety-switch-works

Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

Is the transmission range sensor the same as the revolution sensor and does the tiida carries both top and bottom?

These sensors are not the same. I don't know you are saying about top and bottom?

The guy at the parts shop saying that the car use one at the top n one at the bottom

One will be input and the other will be output RPM sensors.

So its two then?

Or the rpm and the range sensor is two different thing?

Yes the RPM and range sensors are not the same thing. I found another transmission diagram to help us get the problem fixed. (Check it out below)

Please let us know what happens.

Cheers, Ken

OK am clear now on the situation