Given that dimensionally transcendental engineering is integral to TARDIS design, the engines - and pretty much all of the rest of the interior - could be inside the console - even if they are also accessible via other rooms and corridors.
And the console, like the TARDIS itself, could be bigger on the inside. So while we see a console, who knows what’s happening inside of it
My take, informed mainly by The Doctor’s Wife, is that while a TARDIS console alone can move through time and space, it’s a bit like driving a card without a windshield, exhaust system, shocks and brakes. It may get you where you’re going, but the odds of you experiencing harm increase greatly.
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