Please help: Issue starting the Boxster in summer heat

[alfers]

Hi all,

I tried searching the forum for answers on this but didn't get anywhere. Hopefully someone here can help...

I am having trouble starting my '01 Boxster S, when I park it under the sun or heat for more than a few hours. At first this was an occasional problem, but now it's getting to be pretty regular.

If I leave the car until sunset when the temperature cools down, it will start again without issue.

I replaced the battery last year so I don't think that's the cause.

If I turn off the car after driving in the heat, but don't leave it parked for very long, it starts without issues. It's only when I leave the car parked in the heat for more than a few hours.

Any idea what is wrong?? This has been frustrating, getting stranded and having to wait until the evening to pick up the car.

Thanks in advance.