Kia Carnival Gearbox & Transmission Problems

INTERMITTENT faults can be hard to trace, so you have to go back to the basics and check everything. I doubt it's a transmission problem. It sounds more like an electrical or even a fuel problem, perhaps something as simple as an earth connection on a coil pack or clogged injectors. Take it to a Kia dealer and have it thoroughly checked.

Your car is still under warranty, so take it back to your dealer and have them fix it.

The shifter in your Kia is designed to be used in the normal (PRND) range in most cases. If you decide you’d like to control the gear selection yourself, you can flick the lever across to the other plane (+ /-) also called Sports mode, and control when the transmission changes gear. By pushing the lever forward in that second plane, you can force the transmission to change up a gear. Pull the selector back and it will shift down a gear. Hence the + and – symbols.

In most cases, the transmission will stay in the gear you select in Sports mode, unless you try to take off from rest in a high gear (when it will shift down for you) or you’ve taken the engine to its maximum speed, at which point the car will automatically shift up a gear to prevent the engine from blowing up.

The idea of this is that you can drive the car in a sportier fashion (makes little sense in a Kia Carnival, I know). But it can also be handy if you are, say, towing a trailer and need a little more engine braking, at which point you can flick across to Sports mode and force the transmission into a lower gear.

Many owners never experiment with Sports mode and it remains a mystery to a lot of people.