Hi. The spoiler error light recently came on while going over 75mph. The spoiler rises, but one side only midway, not all the way to the top. So it's kinda sideway. When I slow down, the spoiler lowers back to original position without any problem.

Do I have to replace the whole hydralic kit, or I can do some fluid injection to make it work again? How much for the kit? I saw some fluid leak on both of the hydralics when I open the engine hood. Please advice.

Thanks.