Suspension gone harsh since battery disconnect

[Mechcanico Lee]

Hello all, had the battery off doing some tests and since re connect the suspension feels harsh like 100 psi in the tyres , no fault codes , suspension lifts up fine and drops back down all good .
Ride hide looks same as usual , jacking / towing mode not engaged , everything seems ok .
Is there some kind of re learns /adaptations to carry out when battery has been off ....... have had it diss connected previously with no troubles though .
Hope it's not spiked the module or something daft

Thanks in advance
Lee