We don't have the Polo here in the USA / Canada. I would need the engine code to look up specific information.
Ping sound starts with the Ignition ON: Engine running or still off?
If the ping sound "does not sound normal" or "sounds mechanical" have a Service garage listen to it / look at it.
** If the oil light is blinking, do not run the engine. **
Since the brake fluid is normal, I'm not sure what else you could check, aside for bleeding (flushing) the brake and clutch hydraulic
system. If you have never done this before, let a service garage do it. You could make the problem worse by bleeding / flushing
Not much I can do over the internet, sorry.
Saturday, March 9th, 2013 AT 4:39 PM