Rear brakes on 2006 jetta 2.5 have seized. Have the parts to fix having problem removing old parts. The particular issue as I understand it is that the brakes will not loosen enough to remove them. Any suggestions?

caliper or most brake part bolts are between 10mm and 19mm for the wheel bolts , get a set online if haven't got tools , don't waste time and money just trying to get a particular size as many different manufacturers are used for the same part and may just get one that uses a different bolt head size

Need engine running so ABS works

Need a helper slowly pushing brake pedal,
as you crack open the bleeders,have clear
vinyl tubing on them to a bottle

RR,LR,RF,LF

Do not let master run dry & LEAVE COVER
ON or you will squirt fluid all over everything
& ruin your day

Ratchet up rear parking brake, if you did
rear discs

You did remove ALL Rust from wheel brg hub face,
both sides of rotors,all caliper & pad sliding abutements
& use anti-seize where contact & sliding takes place

All rust etc from back of wheels

Machined rotors,no pads ever go on old worn suface,
the brakes will only make noise & long list of other problems

The anti-seize goes on everything,caliper bolt threads,back
of wheels,both sides of rotor mountings

Synthetic Brake Grease goes on caliper anchor pins or
or bolts & under rubber boots
Not the graphite stuff

While you at it, get the old trans & power steering fluid
out
They get done Every 30,000 miles & brake fluid every
2 years,spark plugs at 60,000, front (2) O2 Sensors
at 100,000

are you saying that the brake calliper body has the special bolts holding it to the axle housing that you cannot undo and you cannot move the callipers back off the discs to get the discs off
to get the correct tool to do the job , ask a brake specialist shop for the tool size

You need a special tool for that.. You can rent one at your local parts store..

Have a great day !

Do you live near the sea? Do you use the car to launch a boat ?. The third idea is, how often do you replace the brake fluid. I absorbs water very quickly and corrodes the alloy parts in the callipers. As you pump brakes, it pushes impurities out to the end of the lines. Fronts are closest then rears.

I had the exact problem today on my in-laws 06 jetta. Come to find out - this model has an electrical parking brake in the rear. The piston will not go in manually like other disc brakes. You must disconnect the electrical wire in the back and run a jumper to the connection from a power source like the battery and the piston will go in.

A SIX INCH C-CLAMP, PURCHASED AT THE AUTO PARTS STORE, IS NEEDED TO PUSH THE PISTON INTO THE CALIPER AS LONG AS IT IS THE FRONT BRAKES THAT YOU ARE WORKING ON. IF YOU ARE REFERRING TO THE REAR BRAKES, THEN THE PISTON MUST BE TURNED COUNTERCLOCKWISE(TO THE LEFT). HOPE THIS HELPS. PLEASE KEEP ME POSTED. THANKS FOR USING FIX-YA. GOOD LUCK

im sorry bro i find that you needing special tools a load of bs. i may be wrong but i really really doubt it. brakes are easy. first locate the caliper and there should be 2 bolts holding that tight. loosen the top bolt and then take out the lower bolt from the caliper. the old pads should just fall out. remove the master cylinder cap. (the jug with brake fluid in it.) compress the piston replace the old pads and push the claiper back down on the rotor. tighten bolts back up pump the brakes till hard with the car off and then repeat for the other side.

volkswagen polo rear brake load sensing valve linkage has seized!!!
What can i do?

There is a special tool you need to do this. It is virtually impossible to do without this tool. I got mine from Harbor Freight for $20. the kit comes in an small orange case and has multiple heads and it pushes and turns at the same time. Do not use a C-clamp, it will damage the piston. This tool still does use some manual labor, but it is worth it when you save a few hundred dollars doing it yourself!