Do you need to bleed your convertible pump after topping it off with ATF fluid?

Spence340

Member
Joined
Mar 26, 2017
Posts
110
Reaction score
16
My convertible top on my 2012 Stang stopped working so I looked online and it looked like the culprit might be low fluid in the pump. After getting a syringe at CVS and putting in fluid until it poured out the top 0f the hole it seems to be working fine. There were few people that mentioned bleeding the pump was necessary after refilling it by leaving the plug out and putting the top up and down a few times. Wouldn't the fluid squirt out if you did this? One poster said his pump failed not long after he filled it up because he had not bled it after filling it. Can anyone set me straight on the right procedure after refilling the pump reservoir?
 

Jonas1ne

Junior Member
Joined
May 28, 2026
Posts
8
Reaction score
7
Location
USA
If the top is working normally now, you probably don't need a special bleeding procedure. Most convertible top hydraulic systems are largely self-bleeding.
I wouldn't cycle the top with the fill plug removed, as fluid can spill out. Instead, fill the reservoir, reinstall the plug, cycle the top several times, then recheck the fluid level.
The bigger issue is figuring out why the fluid was low in the first place, since these systems don't normally lose fluid unless there's a leak.
 

86GT351

Senior Member
Super Moderator
Joined
Nov 14, 2010
Posts
7,304
Reaction score
1,791
Location
Sunny South Florida
Bleeding the hydraulic system on a 2012 Mustang convertible top purges trapped air after a repair or leak. The process involves manually cycling the top while continuously topping off the reservoir with Motorcraft MERCON V Automatic Transmission Fluid
 
Back
Top