212 parking brake sticking on

[keith of kent]

2015 S212 with 54K miles.
Only use the car once or twice a week at the momement and when I first start to use it the parking brake sticks on. I've tried lifting the pedal with my foot to no avail.
The car is garaged and I don't apply the parking brake. When I get it out I have to apply the parking brake whist I shut the garage doors, and then it sticks. My trusted Indie lubricated the pedal mechanism 6 months ago.
Is there anything I can do ? I have read that some MB's have an access cover under the rear seat, how do you lift the rear seat if there is one?

 

[Petrol Pete]

Lower rear seat squab removal will differ from car to car , but it's rarely more than a few easy to reach bolts , on my estate it just hinges up out of the way exposing the trap door to access the cable splitting cassette (thats what I call it anyway ) Not all MB cars have this feature unfortunate , even if they did replacement is from under the car anyway.

Get the seat lifted to see if you have something like this under there.

Google Image Result for https://forums.mbclub.co.uk/data/attachments/85/85895-4edf88ff749121c9119e1cbd311b9f6f.jpg?hash=Tt-I_3SRIc