Does anyone know if there is a workshop manual available for this model?

Suzuki Vitara 2017 1.6L automatic

Ok I have taken the car into a main Suzuki dealer for a full diag, they found no errors. The noise had gone away now the ambient temperature has dropped below about 24C.

If I run the car on the higher octane petrol the noise is significantly reduced.

No changes have been made to the engine so I suspect something has failed.

I have a 2017 1.6L Vitara Auto 2 WD and under full load occasionally it will make a slight metallic tapping/ringing noise I think its known as 'pinking' as I remember with older cars this is a result of the ignition timing being too far advanced. is this a common problem with the Vitara? I don't hav...