How do I Remove base from Bosch Exxcel Dishwasher SGS45E02GB/45

[nijafe]

How do I Remove base from Bosch Exxcel Dishwasher SGS45E02GB/45?

I got the kickboard off & there's a hole with arrow symbols (see attached pics) that look like I need to insert a screw driver & turn to release it. I've tried the normal length one's that I have But they're not long enough o reach whatever is in there.

Does anyone know what type of long thin screw driver I'll need to buy for this job?

I'm doing this to replace the Drain Pump
http://www.bosch-home.co.uk/store/product/Pumpdrain/00165261

I also tried to get the side off to see if I could get access this way. But couldn't get past removing two screws at front. Which loosend it , but no obvious way of then detaching it.

Any other tips to complete this would be greatly appreciated.

 

[nijafe]

UPDATE
I got the side off thanks to olldixon & tried the red anti flood switch, this made the drain pump spin.

Also ran a quick wash with drain pipe into a bucket. Which proved the pump worked during the cycle as some water was pumped out intermitently. However at end of cycle water was still left in machine which I drained again with red switch.

So my drain pump does spin, so I won't buy a new one.

But something is not telling it to switch on at cycle end, so I'm stuck again!!

Anyone with ideas?