2020 polo gti intermittent start

[sc0tt]

Hi all,

Looking for some advice on an issue with my 2020 VW Polo GTI.

Occasionally it won’t start – dash lights come on fine but there’s no crank, just a single click. Other times it starts completely normally.

The battery has been replaced and fully charged, and I’ve also replaced the batteries in both key fobs. I had the starter checked by an independent starter motor specialist, and they said the starter itself tested fine.

So currently:
• Dash lights OK
• Battery replaced and charged
• Starter checked and reportedly fine
• Intermittent single click, no crank

Has anyone experienced this or have any ideas what to check next?

[jeremyc]

Auto or manual gearbox?

Could it be a faulty brake switch (auto) or clutch switch (manual) inhibiting starting intermittently?

[stevieturbo]

sc0tt said:

Hi all,

I had the starter checked by an independent starter motor specialist, and they said the starter itself tested fine.

But occasionally it may not be fine.

Really you need to diagnose the car during a non start event.

Check the starter solenoid is getting 12v during attempt to crank. If it is and it is not cranking....then it is likely then starter.

[E-bmw]

My best guess would be battery/chassis/engine earth or the starter connections.

BTW, you don't say what happens to the dash-board lights when you get the non-start issue?