Yaris won't start :/

[waxaddict]

OK I'll give it a bump start in a bit.

Am I right in thinking that if it bumps alright then its definitely a battery issue?

[CTScott]

Originally Posted by waxaddict

OK I'll give it a bump start in a bit.

Am I right in thinking that if it bumps alright then its definitely a battery issue?

Yes. Battery or possibly alternator, but if it has been doing more sitting than driving, then it is more likely the battery. Over here, most auto parts stores have a device that they can hook up to the car to test the battery/alternator and will do so for free. If you have access to a multimeter a simple test is to measure the battery voltage before and after starting the vehicle. It will typically run between 11 and 12.5 volts before starting and will go up to 13.6 to 14.1 volts once running.