brakes are locking up changed all brake pads?

Did the front pads just wear out? Did you have this issue prior to this repair? This happens when the brake booster push rod is adjusted out too far which does no allow the brake master to return fully holding the brakes on . To confirm the issue loosen the brake master mounting bolts 3 turns to see if the car starts to roll again, if so remove the master and adjust the booster push rod inward. Also a brake flex hose can come apart internally causing a short of check valve in the system but this is usually isolated to one brake either front or rear. If you mean sticking applied, try opening the bleeder and see if that releases the caliper. If it does, it could be bad brake hoses that have collapsed internally. Check out the diagrams (Below).

1. Remove the wheel & tire.

2. Remove the brake hose clip (A).

3. Disconnect the brake tube by loosening the tube flare nut (A).

Tightening torque :
12.7 - 16.7N.m (1.3 - 1.7kgf.m, 9.4 - 12.3lb-ft)

4. Disconnect the brake hose (A) from the brake caliper by loosening the bolt.

Tightening torque :
16.7 - 19.6N.m (1.7 - 2.0kgf.m, 12.3 - 14.5lb-ft)


Installation

1. Installation is the reverse of removal.

Caution:
Use a new washer (A) whenever installing.

2. After installation, bleed the brake system


Check out the diagrams (Below). Please let us know what happens.

Did not have this problem before changing pads. Bled front calipers this helped for awhile then caliper stuck again. Have had this problem before with one caliper but not two after a brake job.

It does sound like the brake hoses are not allowing fluid flow back to the master. If you have to open the bleeder, then pressure is still in the caliper holding the pads applied.

Roy

Is there some kind of equalizing mechanism on this vehicle for the brakes that needs to be reset?

It just does not seem likely that both front hoses would go bad at the same time after a brake job.

No, no rests for brakes at all.

The fluid bleeds back through the ABS unit and then to the master cylinder.

There was a TSB for the rear pads sticking on from the caliper mounts but not on the fronts at all. That is why it looks like basic hydraulics issue.



Roy

You are correct but that depends on how you supported the calipers when you had them off and if you twisted the hose moving the caliper around. There are a lot of factors for this to happen.

Roy

I have bled the front calipers and there is fluid coming though the lines. So it does not sound like a line restriction.

The fluid will flow when you bleed because you are forcing the fluid by the restriction. It is after you have applied the brakes that the restriction stops the fluid from returning or leaving the caliper. The caliper stays applied as there is no pressure forcing fluid out of the caliper.

Roy

Would you recommend changing the rubber lines to the calipers?

At this point, it is indicating the hoses are bad. You can get the hoses and install one and see if it resolves the issue. I would also recommend flushing the fluid. If you have never changed the brake fluid, this would be an excellent idea since it should be flushed every 50,000 miles. The fluid will break down and cause all kinds of issues.

Roy

Okay, thank you very much. You were helpful. I will try these suggestions. Thanks

You are welcome. Glad to help. Feel free to come back for follow up questions.

Roy