HS Phev wipers not operating correctly ie only on fast selection

[JackyD1]

2022 HS Phev wipers not operating in intermittent and continuous selection one. Only on fast continuous do they work. Help!

 

[Speakasyoufind]

Would have thought either control unit or motor. Mine has had/still has intermittent issues with single wipe sometimes lasting 3 or 4 wipes or even longer. Wipers on auto working when they don't need to then when they park, they park part way up the screen. Not done anything as it has behaved since last time. It's a very weird glitch and one that won't show up at dealers for warranty purposes, guaranteed, so I will end possibly £100+ out of pocket as will have to pay for diagnosis (I find bizarre you have to pay, if intermittent fault not found, but stops people making claims i suppose)