458 Help removing rear rotors

I don't know Ferrari's specifically as I don't own one (yet), however this is pretty common when the parking brake is electric, assume it is? I have run across this with my Audi's, Porsche and BMW. What will happen if you call a shop is they will tell you that you have to bring it in and hook it up to their computer to release the emergency brake, which is electrically gripping the rear rotor enough that you cannot remove it. However, you don't need that fancy computer to back the emergency brake pucks off the rotor, all you need is a spare 12v battery, in my case I use the one off my motorcycle or garden tractor.

Find the electrical connector that goes to the electric rear parking brake and separate the connector plug. You will see two wire terminals inside the connector that go to the Emergency brake. Grab some electrical wire or alligator clips and hook up to your 12v battery one to hot, one to ground. Then on the bare opposite ends of the wires energize the contacts inside the plug to the emergency brake and you will instantly hear the motor run the puck, either backwards or forwards. You want backwards to fully retract. If its running forward just reverse the wires. Once the pucks are run fully back, you can easily pull the rotors.

If you don't have a spare 12v battery, you may get enough power out of a simple 9v battery like you have in your smoke detectors, it should probably be strong enough to do the job.

Good luck - Duane

 

You probably need to release tension on the electronic parking brake shoes inside the back part. There are also two fixing screws that hold the rotor to the hub. I'm attaching some documentation which might help you.

Ray

 

You got the right idea there. On the Ferrari there is a manual crank affair, which you can use to defeat the parking brake also. It's a rod which goes in through a hidden hole back there. The owner's manual shows how to do it in the emergency service section as I remember. If the car is powered up, it naturally is always trying to enable the E-brake so the car doesn't accidentally roll down a hill, etc.

Ray

 

Page 204 in the owner's manual should help out also... disconnect the power and start cranking!

Ray

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Put the car in carwash mode.

Start the car.
Put it in 1st.
Put it in neutral
Turn engine off
Immediately turn car on WITHOUT starting it.
Turn car off

Car can now roll and all brakes are released.

If the brake is still on at this point, just pull the P brake handle and it should release the drums.

The car has two p brake systems so to speak. One is the drums and the other is a gearbox lock the engages both forward and reverse. The latter is the one that is engaged when you shut the car off in first. The rear drum brake can be fully disengaged by the P handle once the car is in carwash mode.

This is what I recall from my 458 days, and this is still how it works on the 488 and Pista. They just use a set of small pads on the disc rather than a heavy centre drum.

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Did you by any chance try and weigh those new rotors? Would like to know what they weigh.

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You may also back off (loosen) the emergency brake torx bolts. There is two per side; I had to do this to move the car when the battery in my Pista died.

 

It's a totally different system. The Pista does not have a drum brake. When I did the CCST discs, it was very easy on both Pista and 488. No need to loosen anything on the Pista. Just pull the P lever to release the parking brake after putting it in carwash.

And like I said, the 458 releases brakes that way too, they are just drums.

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