Does a Toyata come with instructions; them damn flippin clever japanese

The amber 'engine' symbol being on is prompting you to plug a code-reader into the OBD socket below the steering wheel and only the fault code shown will tell you why the light is on. The socket will most probably be covered by a flap of some description. Your motoring organisation - AA, RAC or whoever - will come out and read the code for you, especially if you park on a supermarket car park and tell 'em it's just come on and you're afraid to continue until you know it's safe to do so. You can buy quite cheap code readers on line but you would have to read the reviews first to make sure that they will not only display the fault code but also tell you what the code means! I have a Sealey code reader - forty quid from my local parts shop, which does the job for me.