TAT,TAT,TAT, TAT,TAT Door Lock Sound on 2006 E350
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Newbie
Joined: Jun 2009
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mercedes e350
TAT,TAT,TAT, TAT,TAT Door Lock Sound on 2006 E350
Just recently when I get back in my car after a stop and start driving off, the automatic door lock system on the driver's door goes TAT,TAT,TAT, TAT,TAT as the door lock is going down. Kind of like a machine gun sound. Not making the usual "CLICK" sound like the other doors. I haven't fiddled with it yet,...but want to get an idea as to what it is and is it fixable by me? Thanks!!
Senior Member
Joined: Oct 2011
Posts: 314
Likes: 29
From: Coastal Georgia, USA
2007 E350 Sedan
Could be the lock actuator going bad. See this link.
https://mbworld.org/forums/e-class-w...lems-help.html
https://mbworld.org/forums/e-class-w...lems-help.html
Member
Joined: Feb 2014
Posts: 242
Likes: 18
W211 320CDI -04, W210 270CDI -01
Search 'bouncing door lock'... most likely a small spring inside actuator broken, costs few bugs but first time required couple of hour DIY. Garages just replace whole actuator, costs couple hundreds of bugs.
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Joined: Jun 2009
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mercedes e350
After looking at this answer I went out and tried it; "I have the same problem with my 06 E320..... I took the plunger off (just unscrew it) and took some WD40 and wiped the plunger on the outside then put a little in the hole where the treads are- filled almost to the top. Then screwed the plunger back on the rod and gave it a try. It has been working flawlessly for a little over a week. Only thing I can imagine is the plunger was causing some slight binding or resistance and the WD40 fixed it." It seemed to instantly "solve the problem".
I realized I have probably just bought myself some time before having to bite the bullet and install a lock actuator,...as I probably did not "solve" the problem, but rather put a "band-aid" on it. Thanks for your help!!! Carol
I realized I have probably just bought myself some time before having to bite the bullet and install a lock actuator,...as I probably did not "solve" the problem, but rather put a "band-aid" on it. Thanks for your help!!! Carol
Newbie
Joined: Jul 2016
Posts: 13
Likes: 2
From: Los Angeles
E350
Bouncing Door Lock
I would just like to share a quick fix that has saved me hundreds of dollars and cost me almost nothing.
My E350 developed the bouncing lock thing on the passengers side. It was ok for a couple of weeks, then it was really pot luck, whether the car would actually lock or remain open, so parking became a russian roulette of sorts.
Anyway, I looked on Youtube for a fix, all I found was a horrendous procedure that I neither have money nor the patience for!, it seemed to centre around the actuator and for me, the 'cocktail stick' wedged down the plunger worked.
(a very bizarre youtube video from Europe) but how reliable is that long term?
My problem does seem to be a lack of resistance on the door lock plunger. So I got some silver DUCK tape (Duct tape) and it fixed my problem.
Method:
1. remove the plunger from the door (unscrewing)
2. tear a small piece of duck tape, you want to cover the rear 1/2 of the barrel of the plunger, anything more and it will get stuck and that won't be good for your door or the actuator who'll have a really hard time.
3. Put the plunger back in. It should have enough purchase against the door and not bounce like Tigger on acid...
Best case scenario: fixed!!
Worst case scenario: it'll buy you some time before it goes kaput.
Note: mine has been working perfectly for the last 3 months...
Hope this helps anyone who has the same problem. It's not the best fix, but it's a cheap bodge. If at the worst you have to buy duct tape, it's going to cost you $4 + Tax and a trip to Home Depot or some other hardware store.
My E350 developed the bouncing lock thing on the passengers side. It was ok for a couple of weeks, then it was really pot luck, whether the car would actually lock or remain open, so parking became a russian roulette of sorts.
Anyway, I looked on Youtube for a fix, all I found was a horrendous procedure that I neither have money nor the patience for!, it seemed to centre around the actuator and for me, the 'cocktail stick' wedged down the plunger worked.
(a very bizarre youtube video from Europe) but how reliable is that long term?
My problem does seem to be a lack of resistance on the door lock plunger. So I got some silver DUCK tape (Duct tape) and it fixed my problem.
Method:
1. remove the plunger from the door (unscrewing)
2. tear a small piece of duck tape, you want to cover the rear 1/2 of the barrel of the plunger, anything more and it will get stuck and that won't be good for your door or the actuator who'll have a really hard time.
3. Put the plunger back in. It should have enough purchase against the door and not bounce like Tigger on acid...
Best case scenario: fixed!!
Worst case scenario: it'll buy you some time before it goes kaput.
Note: mine has been working perfectly for the last 3 months...
Hope this helps anyone who has the same problem. It's not the best fix, but it's a cheap bodge. If at the worst you have to buy duct tape, it's going to cost you $4 + Tax and a trip to Home Depot or some other hardware store.
Thread Starter
Newbie
Joined: Jun 2009
Posts: 7
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mercedes e350
Thank you for the ingenious "fix"! I will keep it in mind for when mine decides to rebel again. The spray lubricant seems to be really working well,....but I know that all good things must come to an end. When it does,..I will employ your "fix". Thanks again!
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Thread Starter
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mercedes e350
Thanks for the update. I can report that the WD40 spray is good for about 6 months as well.....till another quick spray. No way am I spending hundreds to "repair" it. Whether duct tape of WD40,...the "tatatatatatatatat" is gone!
Junior Member
Joined: Feb 2016
Posts: 55
Likes: 4
From: Mid-Atlantic
W211 - 2003
Similar to the duct tape method, I just sprayed two coats of plasti-dip on the stem area of the plunger.
The extra thickness/friction works just fine. I already had the Plasti-dip going because I was coating my EZpass, and whaddya know, it's worked fine for the last 6 months or so.
The extra thickness/friction works just fine. I already had the Plasti-dip going because I was coating my EZpass, and whaddya know, it's worked fine for the last 6 months or so.
Thread Starter
Newbie
Joined: Jun 2009
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mercedes e350
Similar to the duct tape method, I just sprayed two coats of plasti-dip on the stem area of the plunger.
The extra thickness/friction works just fine. I already had the Plasti-dip going because I was coating my EZpass, and whaddya know, it's worked fine for the last 6 months or so.
The extra thickness/friction works just fine. I already had the Plasti-dip going because I was coating my EZpass, and whaddya know, it's worked fine for the last 6 months or so.
Junior Member
Joined: Feb 2016
Posts: 55
Likes: 4
From: Mid-Atlantic
W211 - 2003
Super Member
Joined: Apr 2007
Posts: 633
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From: USA
2006 E320 CDI
