2005 Xj8l

My 2005 Jaguar XJ8L has 59,000 miles on it. Recently the car would lower and would not come back up when started. Mechanic said it was the air suspension and that is what the light alert said. Paid $2300 to have the pump replaced. Week later, it did the same thing. Mechanic replaced pump again. Week later, same thing. Jag dealer said that it needs front shocks which are $3000. Does this sound reasonable and a possibility as to why the air suspension won't come back up. It seems to do it more in cool weather.