Y 62 2023 - 26K KM Done , Front axle lubrication Dried Out ,is this even possible ?

[vinayak n]

hi All ,looking for an advice ,recently i noted a clicking sound from front wheels of car while i move from idelling ,the 1st 10 sec then it goes off ,same for reverse 

got  the car checked at Nissan  showroom ,they said the axle lubrication has dried out ,they did open up & did the front n back axle lubrications 

they also told me that there is sand inside ,i am still not convinced with there explanation  ,though after the service the sound has no come back again 

is it possible that sand can get  inside for an area in car  that is closed ?also i was asking them how to prevent  this from happening again they  had no answer to this also

 i have almost completed 15 drives , newbie + fewbie in badayer side.have got a 2inch ironman lift kits + 20 mm spacers from AOR 

 

looking for an expert opinion if i can prevent this from happening again