This works 100%. I had this same issue where in the winters where it would get stuck when cold and was quoted £180 to fix by a merc specialist. In the UK you can undo the panel under the steering wheel its 3 T20 screws, no need to remove the side panel like in this video. The panel has 3 wires 2 for knee airbags and 1 for footwell light. With a little squeezing through you can work without having to disconnect the wires. I could see the spring and the ratchet mechanism through the gap under the steering wheel its almost as high up as the steering wheel. Aim and blast away at the spring, ratchet and cable with wd40 then some spray grease. Engage and disengage a few times almost immediately it will release with a firm thud. Keep a cloth under the pedal to catch drips else wd40 seeps into the carpet and it will smell for days. Does the trick works 100% and money saved!

Thank you. Although my RHD car is the opposite way around, the coil/spring bit you lubed up with WD40 is in a different location but because of your video it showed me what to look for! For anyone else on my Mercedes C204 its located above the park pedal mechanism on a Right Hand Drive. Soaked it in WD40 and now its much quicker to release.

One thing I would say is don't use wd40. Use a real lubricant spray.

Worked a treat! UK cars (right hand drive) can’t access the second spring through the plastic side panel but you can kind of get it from underneath once you know where you are aiming. Thanks so much. Respect 👊

Mercedes should issue a recall for this ! Angry 😡

If you hold the release lever out then work the pedal up and down, much easier and quicker than keep wearing the ratchet and frees of quickly.

I was quoted $850 to fox it! What a rip off! I declined!

Thank you so much! I had this issue. At first, Brake would not release when it was only cold. The dealership said they new of brake issue and brake mechanism had to be replaced at $500. It finally wouldn’t release all the time. Found this video and gave it a try. Now it works like a charm. Just pull handle and it releases. No more pulling up with my foot or hand. Saved me $500. Only had to buy some WD40 and grease.

Hey guys hope this has helped you save some cash in these hard times. Consider subscribing to help grow this channel. God be with us all.

Better way whould be to use big surrenge and some silicon tubing to greese the spring with more precision and less mess

Thank you very much this just saved me £200 took less then 20 minutes to fix big respect the person who uploaded this video 👍

You're a GENIUS!!! I cancelled my Monday appt with Mercedes. You saved me $1000! I'm sure of it! Works perfectly!

The most valuable video on KZread, I had this exact issue and the garage wanted to change the whole parking brake unit. Followed these tips apart from mine is RHD but I knew what to look for from the video. Within 5 mins it was working perfectly. Thank you

You just saved me the $700 my dealership wanted to charge to replace the whole assembly. Thank you!!

Just wanted to thank you so much for this. Worked on my e550 coupe. I was ready to take it into the dealership then saw this. It wasn't working at first, but kept trying and putting WD40 on it. After about 50 times of engaging and releasing it finally got better. Now it releases instantly like it should. Huge thank you!

Thanks for making this video. It fixed my problem. I was quoted $950 to replace the parking brake paddle Assembly.

Thank you.

Thanks for this it was a great help. On the RHD cars remove 3 torx self tappers and loosen the under tray. Slide the clip which retains the OBD port upwards and detach the OBD connector. Remove the singe Philips self tapper from the bonnet (hood) release assembly - twist this 90 degrees and "post" it through the slot in the tray. Then you can remove the tray completely and let the dog see the rabbit🐰. The OP is quite correct in that many garages don't even see the torque spring and just lubricate everything else - but binding between the coils (caused by hardened grease) is what really causes a slow or stuck release especially in cold conditions.

Thank you!! I was on my way to the dealership and decided to give it a try .I worked great .Thanks again

Another grateful person here to say Thank You! My car just failed it's mandatory annual inspection on this issue alone, and I was gutted when I saw what it would cost to get it "fixed" at a dealership. Awesome how-to video, really well filmed and brilliant running commentary. Cheers!