Hi all, just bought a 2005 Sirion 1.3 here in Nepal, and had a few questions...

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Hi all, just bought a 2005 Sirion 1.3 here in Nepal, and had a few questions...
1) To replace the CD player with a 2 DIN unit, what do I have to get as far as parts go? Is it possible?
2) There is a check engine light on (left side of dash) and not sure what that means... what to check there? Is that the oxygen sensor?
3) The ABS light is on, and I suppose that means that one of the sensors (or all) is blown? Brakes work super however.
4) What exactly are the models of cars that I can get parts from for this car... I hear Yaris and Passo and a few others - ha!
Well, thx!
Jigs