Mercedes A209 CLK - How To Troubleshoot the Microswitches

Klaus from Top Hydraulics gives detailed information on the location and function of all of the microswitches in the convertible top electrical system on a Mercedes A209 CLK class cabriolet.

[BradsAdventures]

Unbelievable the customer service you have given me. Emailing me at 10:30 at night helping me with no charge. I found this video and found the problem. You’re awesome

[Ruben-GG]

Top dog, thank you! I've just realised the fault with my soft top within 5 minutes of watching this.
You definitely know your stuff!

[YNK]

no idea what we would've done without the breadth of knowledge contributed by this channel! All the respect ❤

[terryflynn]

Hi, thanks for the awesome videos on fault finding and diagnosing faults and manual operation of the soft top

There is one part of the Open operation that you didn’t cover

I’ll run through the sequence for my 2005 CLK55 A209

1. Hit open
2. Windows go down
3. Windscreen lock release

STAGE 1: Cylinders 3 and 4 are activated to raise the compartment cover lid until switch S84/19 registers that the bow has released from the lid and switch S84/13 registers that the lid is no longer in the closed position.

STAGE 2: Cylinder 2 is activated to release the front latch. Switch S84/11 registers that the roof is no longer locked, and S84/18 registers that the roof is still in the catch position.

STAGE 3: Cylinders 5 and 6 are activated to raise the rear glass (bow).
Bow goes up fully upright. I am assuming Switch S84/15 has registered that the bow is now in the fully upright position. How do I test that.


6. That’s it, I can hear relays clicking but cylinders 3 &4 don’t run or raise the compartment lid at all

I’ve checked all of the physical parts and can’t see any broken limits or such

Would appreciate your advice

Thanks, keep up the good work in your tutorials

[kurtw]

Thank you for your simple yet thorough information 👌. Our new to us CLK500 all working well now.

[Thomas-qxvi]

Thanks for that awesome video explanation and all the details!
I have a problem with my vehicle for quite a long time already and haven't been able to solve it, but now I know which Microswitch with a high probability is causing my issues. Thank you very

[TheCarusoGroup]

I’m not really the most mechanical guy, but I do follow along with YouTube videos pretty well. So glad I found your channel. I’ll be needing the full kit of cylinders soon, and am actually excited to tackle this with a little help from a friend, and you, Klaus.

[robertosterbauer]

Super video, I got a CLK 240 which has sticky microswitches sometimes and resulting error messages. Very clear explanation for self diagnosis and fixing (saving lots of money). Danke schön.

[ukengineeringplantservices]

Amazing run through, mine had the lh micro switch fitted the wrong way round, you're walk through shows the direction of the fitted switch. And mine was incorrectly fitted thank you 😊

[VPMusiconline]

You saved my roof! Thanks for the sound advice 🙌

[karlp]

Thank you very much for sharing your knowledge. An excellent video, one of the best informative videos on YouTube.

[olegloginov]

Top Hydraulics is the best! Greetings from Houston, Texas.

[nanakwameappiah]

Great video - finally figured out why I kept seeing the partition open error.

[SyedPlayz]

Thank you for that great detailed information for my mercedes convertible soft top. Your video's are great thank you again.

[davidhockaday]

Hey Top Hydraulics - can you help me please, i'm going crazy!!!? My 2004 goes down as usual, then won't close, doesn't even try, just states "visit workshop" - First diagnosed a broken replaced, but still the same error??? I then replaced S84/15 as it seemed to be happy to close the roof again if it didn't open past about three quarters open. Changed the switch, again, no fix! I've checked fuses (but as pump operates, so not likely) and I have switched around the yellow relays - still no change. Just to state have owned the car 1 year and roof has worked well. Fluid level correct in the reservoir, so no leaks. I've even taken the rear to bits to check is undamaged and appears to work correctly. A recent scan on an Autel professional diagnostic tool saw no errors on the roof control module. I double checked S84/13 by jumping the wires as I could do this whilst trying to operate the hood and again, the switch tests good as no change. Been quoted £500 to diagnose by a company 3 hours drive isn't worth fixing if thats my only option - can we save this lovely old only has 75k miles!

[sidyarassociates]

Great video BRILLIANT and very interesting and also very informative thank you very much from Canada 🇨🇦

[aimee_elisabeth_]

Thank you so much!!! I have been fiddling around for days trying to figure out my warming to ‘lower boot separator/ski bag compartment’
I tried a folded napkin in that left hand side mechanism (that you pointed out) so that the arm could fully press on it & connect & it worked first pop!
Now that I understand where the problem is coming from I can do something about it if it happens again! Thank you :)

[michaelscarlino]

Brilliant and clearly a very knowledgeable person.

[wsgjr.]

WOW! Another GREAT tutorial! Thanks! Klaus is awesome!

[mercedesbenzcee]

Your awesome**thank you so very much for this information I've been having this problem with my vehicle for quite a while 1999 Mercedes CLK soft top 320 I knew it had something to do with the fuses the relay or the hydraulic system but now with the knowledge of this video I can inspect and diagnose all three to determine which is the major problem I will start and begin first with the fuses then with the relays but as also as you said check the hydraulic system for any low fluid or no fluid at all because my hydraulic system might be empty and they may be a leak as well so I might have to get the whole system replaced but thank you so very much for the knowledge and please continue to make these awesome great video