Disco 2 ABS issues

Morning all, Yesterday i had a garage change front RHS UJ gaiter as a result ABS lights on and appeared to be actuating itself at low speed hard cornering. They changed the sensor using a second hand one .. it drives ok but 4 warning lights are on red break indicator, yellow - abs , hill descent, and TC. 3 yellow I understand but the red break one ?

I cant understand the blink test instructiosn which im guessing apply to earlier models ,
Any hope of getting lights off aka ABS back meant to be driving 2000Km to southern Ukraine starting ...this afternoon and thought fully functioning vehicle might be nice as a start anyway. - You can laugh - Mrs not greatly impressed, I thought garage would be less hassle than me myself i ....

Cheers, MIchael

A fault code reader is needed to check faults the system believes exist & is the only way of turning off the warning lights. Does the garage that did the work have one?

So the blink test is only for earlier models ?
Garage wont have land rover specific , just generic like me for other car ..
I wa snore asking if anyone has experience as to what they might have upset whilst removing and refitting gaiter over UJ of the front wheel drive shaft ,
Thanks Pawl