MBWorld.org Forums

C-Class (W202) 1995-2000: C 200 CDI, C 220 CDI, C 270 CDI, C 180, C 200 K,C 230 K, C 220, C230, C 280

Door/Trunk locks just stopped working - Vacuum?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Apr 26, 2017 | 11:37 AM
Share
  #1  
mrlament's Avatar
mrlament
Thread Starter
Newbie
5 Year Member
 
Joined: Jan 2017
Posts: 13
Likes: 0
From: Maryland
2016 E350
Door/Trunk locks just stopped working - Vacuum?
Hi everyone,

I have a 1999 c280. Out of the blue, all of my door locks and my trunk release have stopped working. I'm assuming this is the vacuum pump?

If so, can anyone tell me where it's located so I can replace it? I haven't been able to find the information online.

I have seen a few posts that suggested it might be in the trunk. If so, how would I access it, as without vacuum, I can't get the trunk to open (even with the key).

Thanks in advance.
Reply
0
Old Apr 27, 2017 | 02:31 PM
Share
  #2  
mrlament's Avatar
mrlament
Thread Starter
Newbie
5 Year Member
 
Joined: Jan 2017
Posts: 13
Likes: 0
From: Maryland
2016 E350
Originally Posted by Plutoe
Google-----PSE pump, mines under the rear passenger seat, make darn sure you have the correct part number for replacement!----if you don't know post your VIN!
Thanks! It looks like mine is indeed in the truck, which brings me to the real dilemma:

How can I access it to replace it when I can't open the trunk without vacuum?
Reply
0
Old Apr 27, 2017 | 03:17 PM
Share
  #3  
mrlament's Avatar
mrlament
Thread Starter
Newbie
5 Year Member
 
Joined: Jan 2017
Posts: 13
Likes: 0
From: Maryland
2016 E350
Originally Posted by Plutoe
You must work the night shift, most trunks have a place to put a metal key---was your stolen??
Thanks again for replying...

Well, I have the slim metal key that fits into the key fob... is that the one you mean? It fits into the trunk keyhole and will turn either way, but neither way actually opens it.
Reply
0
Old Apr 28, 2017 | 05:03 AM
Share
  #4  
shadenfroh's Avatar
shadenfroh
Senior Member
 
Joined: Apr 2016
Posts: 279
Likes: 36
-
Turn the key, hold it there, and then push in.
Reply
0
Old Apr 29, 2017 | 09:26 AM
Share
  #5  
mrlament's Avatar
mrlament
Thread Starter
Newbie
5 Year Member
 
Joined: Jan 2017
Posts: 13
Likes: 0
From: Maryland
2016 E350
Originally Posted by shadenfroh
Turn the key, hold it there, and then push in.
Turns out the issue was with my trunk lock - it goes all the way to the left (and wont unlock), but if I just turn it a quarter turn to the left it unlocks, so I'm finally into the trunk!

Now to diagnose this vacuum pump...

Thanks for the help!
Reply
0
Back to Subforum
C-Class (W202)
View Next Unread
rough idle

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search

All times are GMT -4. The time now is 01:40 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE