Update
Finally was able to get both rotors, brake pads and parking brake pads replaced for the rears. It was a rollercoaster ride. Im going to go through all the issues that i encountered, I thought I knew everything before starting but little did I know. At least I saved 800 with better brakes and rotors installed. Best part now I can do the same even service the brakes on the model 3 and save a trip.
I got most parts from
RockAuto silicone for grease etc from amazon etc.
This is going to become a long story so I am going to try and just mention what went wrong so that others can avoid.
1st mistake did not put the car in tow mode.
I put the car on jack stands and chocks so that car did not move on the front. Put the car in jack mode but did not put in tow mode. I was able to get the caliper off, pins came out easily, took me couple of hours to hammer the parking brake out. (Tow mode would have released the brake).
The parking brake pins just did not want to come out a lot of hammering but just didn't budge, wd40 for 24 hours helped, got the pins bent and out.
Parking pins are not the same as the Brake pins. Parking brake pins not easy to find online
old rotor removed and replaced, screw in rotor came out easily. Had issues in the other one and had to
drill to take the other one out.
once parking brake pads were replaced, I tried to put them back on the new rotor. as the car was not in tow mode the parking brake would not go in. After googling found out that tow mode will help.
2nd mistake, Putting in tow mode while main brake was not on rotors. I pressed the brake pedal to put in tow mode. I pressed it to far which caused the open brake to close and one of the pistons came out and oil started leaking. First thought time to get it towed. But YouTube is amazing
tried to put the piston back in, not easy so ordered used caliper from ebay for $140 also ordered caliper seals from rock auto for 20 as a back up plan. once I get the seal in will try to sell the caliper on ebay .
Put the new caliper on, now had to bleed the brake fluid to get any air out as the caliper got disconnected from the car, that went smoothly.
When i put the car in tow mode some fault came on the screen and the parking brake closed and would not open/release.
I had to disconnect the parking brake, there were 4 pins in the connector was able to connect them to 12V and open the parking brake. if you switch the wires it just changes the rotation. Use the first and last pin in connector to + and - terminal.
took almost 7 days to get all this done because had to wait for the new caliper.
On the 2nd wheel the
issue I encountered was the bolt got stripped when taking the router out, which I was able to take out after drilling, lots of videos online. I then wanted to bleed the brake when i tried to open the bleeder valve the valve just broke without opening. With 100,000 miles things get rusty and not easy to repair. I ended up not bleeding as it was not needed this caliper was never disconnected from the brake line. I have a broken bleeder valve now.
The rest went smoothly, this time made sure that car was in tow mode. I torqued everything to specs, I'll list them below as well. For one of the parking bolts was hard to get a torque wrench in.
Item Torque | Nm | ft-lb |
tire bolts | 175 | 129 |
main brake caliper | 120 | 88.5 |
parking brake caliper | 57 | 42 |
Brake hose to the caliper | 42 | 31 |
rotor screw | 17 | 12.5 |
here are some the links that I had saved while working on the brakes.
https://www.youtube.com/watch?v=n1NvtUwfRJc