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Re: yellow warning light coming on that looks like...
You need a code scanner hooked up to it to find out why that light is on. If you have an autozone near you,go there they will hook one up for you. Takes about 30 to 40 seconds. If not call around.
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If it is the 1.6 FSI model, it is very sensitive to the type of gasoline, it should be octane 97 or higher. Very commonly, owners of this model use the 95 Octane gasoline, which seems to work ok, but the sensors in the exhaust (yellow motorwarning light) will eventually (can take a few years) clog up and you cant clean it or change the sensor easy either as you need to remove the whole exhaust system.
So either you let VW fix this for you (expensive) or you do it yourself (need a decent garage, equipment and a new sensor).
just because the fans come on that doest mean that there is no problem if your thermostat is not operating correctly this could make your engine over heat also while your at flush yout coolant system really good.
When there's something wrong with the brake pressure that handbrake warning light comes on.
The ESP warning light could be caused by a lot of things, but most likely it's a dirty fuel filter. Don't take my word for it though, just go to the VW dealer and have it read the faultcodes from the ECU, which should point you/them in the right direction.
Alternatively, when you have the right equipment (= VAGCOM + cable) and knowledge, you or a friend yould diagnose the ECU yourself.
From the sounds of it, you'll need a small service (air filter and oil filter change, etc.) anyways. Don't forget to reset the ECU (or dis- and reconnect the battery) afterwards to erase the faultcode from memory (when there's still something wrong, it'll return soon enough).
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