On the surface of it, you have multiple problems across multiple systems and components. But the root problem could be as simple as a poor earth or other electrical connection.

Modern, computer-controlled cars absolutely do not like an incorrect voltage across their electrical systems, so the problem could also be something like a battery in poor health which is forcing the alternator to work too hard and for other systems to go haywire due to incorrect voltage.

A close check of the car’s entire electrical system is probably a good place to start.

The Kluger released in 2014 was initially only fitted with navigation in the flagship Grande model. But the facelift of the model in 2017 saw navigation become standard on the mid-spec GXL model, so that model now looks like the most cost-effective way into a Kluger with factory-fitted navigation.

Having a replacement engine fitted will not damage your car’s resale value. In fact, I think the situation would be quite the opposite. If the vehicle is burning oil to the extent that Toyota wants to replace the engine under warranty, then there’s something not right inside the engine. And trying to sell a vehicle in that condition would be virtually impossible, not to mention that you’d be tearing up dollars because it would be worth a fraction of the same Kluger with a good engine.

Continuing to drive a car that’s burning excess oil can damage the catalytic converter in the exhaust system, so it’s not wise to simply keep topping the oil up; the problem needs to be addressed and fixed permanently.

About the only way a replacement engine will affect resale value is in the case of a classic or collector vehicle where potential buyers want to see a car with its original engine and transmission. With all due respect to the Toyota Kluger, that’s not likely to ever be an issue with your car.