Brake pads sticking to disc

[Waitforme]

I washed the car and put it in the garage , didn’t use it for a week or so and when I tried to reverse out it took some effort.
Took a lot of revving in both fwd and reverse before the pads let go with a bang.
With my other car which is a manual I leave it in neutral with no handbrake on and just rock it back or fwd now and again when I’m in the garage after I’ve washed it - it can lie unused for weeks.
Is there anyway to have the Merc in neutral and do similar, or is the parking brake / handbrake automatically applied when the engine is stopped ?

 

[zipdip]

Well the best idea would be to give your car a short run after washing,and make certain you dry the brakes off.

 

[optimusprime]

Last time i had this problem the the ferodo material had come away from the backing plate and welde itself to the disc This was on one side but ,it never stopped me from moving , I would say you have another problem to what i had... I think you need to get the brakes checked . May be the hand brake is sticking on ,or even the brake calipers slide action or the slide pins if it has them .

 

[geoffus]

As been said, you need to run it around the block after washing your wheels, it’s very common for the pads to stick to the discs if left wet and not used.

 

[tonysmb]

Yes, common if put away wet. Why not just chock the wheels if you want to leave the handbrake off (assuming garage is level)?

 

[Petrol Pete]

Is this an electric handbrake car ? Can it be left off when parked ?

 

[optimusprime]

Never use my HB only in town , or if i am parked on a slope like my drive . And if the brakes are on any car are in good condition the shoes or pads will never ever stick to the discs on the rear .

 

[Petrol Pete]

Same question , electric handbrake using brake pad and discs or MB style shoes in drum inside rear disc ? ...If the latter try not to use it for any length of time..or at all.
had the same experience as OP on a non MB car with shoes seized after month long airport parking in winter. No opportunity to drive forward, massive revs and drop the clutch in reverse and BANG! off we went. I honestly thought I had broken something in there, At the time I did not even know the car had this type of handbrake system.

 

[sgregory124]

As others have said, completely normal. Happens to my car if i've washed it or if its been raining and I haven't used it in 3 or 4 days - alarming when it bangs but nothing to worry about. Not as extreme as my old E46 M3, had to get the RAC to that with a mallet to hammer the discs at the back until the brake released

 

[Bobby Dazzler]

Winter is the worst time of year if leaving a car outside. In cold wet weather, regardless of whether you wash it, if you leave a car outside for several weeks there's a real risk of this happening.

Many years ago I parked my C 32 AMG outside without using it for around 10 days over Christmas. The disks and pads had perhaps done 5,000 miles when they "fused", destroying the disks and pads all round. Expensive Christmas.

 

[Sweetooth]

Anyone tried Bilt Hammer Atom Mac? I saw it mentioned on the Detailing forum you spray it on the disks,to stop them rusting.

 

[chic0821]

I use Atom mac & it does work. I put it on my Ftype when its being laid up for the winter , about 6 months. Shiny brakes.
On my S63, the hand brake comes on automatically when park is selected. You don,t get a choice to leave it off. As said above take the car out to dry the brakes. I usually have one foot on the brake & other on the throttle, dries them in a few hundred yards

 

[Waitforme]

It is a 2019 E400D, so has electric handbrake I’d assume.

My question is though, is there a way to leave it I in neutral with engine off and handbrake off ?

 

[chic0821]

I would say you can't, mine will not allow it & the basic design will be used for all models. Possibly you can alter the software if you have a diagnostic tool or ask the main dealer. I do not think they will do it as it raises safety problems. For example the hill hold function will probably not work.

 

[Waitforme]

I would say you can't, mine will not allow it & the basic design will be used for all models. Possibly you can alter the software if you have a diagnostic tool or ask the main dealer. I do not think they will do it as it raises safety problems. For example the hill hold function will probably not work.

Thanks Chic.
I probably thought that would be the case.
I think what I’ll start doing is washing it before I use it rather than after I use it and putting it away with wet discs.

 

[chic0821]

Just a thought on your original post. Did you release the handbrake before you took it out of the garage? Looks like you garaged it & assumed the handbrake was off, so you just tried to drive off & wet, surface rusting brakes just made it more difficult
As I said, the newer cars, yours is 2019, the h/brake automatically is engaged when you select park so you maybe did not realise this, so you were fighting against the handbrake. My Range Rover automatically disconnects the handbrake when you move off (drive or reverse) but on my S63 I have to release the handbrake as its engaged when you are in park. Just drive it a few hundred yards before garaging it

 

[zipdip]

Well true to my word in post 2 ,I had the car washed today at our very good hand car wash,but of course they use pressure washers,and so looking very clean I took it for about 5 miles and gave it some sharp braking,and with the car parked up for about 6 hours I gave it another short run again braking,tomorrow I doubt the pads will be stuck to the disc's

 

[Deleted member 159235]

Last time i had this problem the the ferodo material had come away from the backing plate and welde itself to the disc This was on one side but ,it never stopped me from moving , I would say you have another problem to what i had... I think you need to get the brakes checked . May be the hand brake is sticking on ,or even the brake calipers slide action or the slide pins if it has them .

Wow. A set of Ferodo actually delaminated?

 

[optimusprime]

Dont know the make .But they can come away from the steel backing plates , and then they wedge together and the material will then try to escape the caliper . Some have gone to change the pads only to find the backing plate and no ferodo material left . By the way i should have said Forodo was a name given to the pad material ,just one type years ago -Ferodo

 

[Deleted member 159235]

Dont know the make .But they can come away from the steel backing plates , and then they wedge together and the material will then try to escape the caliper . Some have gone to change the pads only to find the backing plate and no ferodo material left . By the way i should have said Forodo was a name given to the pad material ,just one type years ago -Ferodo

Usually, I never see a problem with Ferodo Premier pads. However, isolated faults are possible.