SL/R231: Trunk not locking in cold weather
Thread Starter
Senior Member
Joined: Oct 2018
Posts: 380
Likes: 100
From: Orlando, FL
2017 550SL - 2018 560S
Trunk not locking in cold weather
There are multiple posts this morning on the W222 of owners' trunks not locking in cold weather. This was my experience yesterday:https://mbworld.org/forums/s-class-w222/802889-trunk-would-not-stay-closed.html
Originally Posted by 604benz
I had a similar issue with trunk not closing last year, i googled it and someone suggested pressing the flashing green button inside of the trunk lid, it seemed to reset the lock for me and i have not had that issue since.
Hope it helps if you have issue again
thank you. Lietrally worked by pressing the green button
Quote:
Originally Posted by Horseford
There was a recall. Mine would not lock when it was cold and wet.
Quote:
Originally Posted by waterzap99
Had same issue yesterday with the cold. Had to try it maybe 10 times. Pressing green button and trying again.
Ill just replace the latch
Interesting so is it software or hardware issue?
There were 10+ posts yesterday from owners who all had the same issue as I did. Several mentioned there was a recall for the motor that pulls down the trunk. No one posted the part number or the service bulletin but several said they purchased the replacement motor from MB for $450.
Originally Posted by 604benz
I had a similar issue with trunk not closing last year, i googled it and someone suggested pressing the flashing green button inside of the trunk lid, it seemed to reset the lock for me and i have not had that issue since.
Hope it helps if you have issue again
thank you. Lietrally worked by pressing the green button
Quote:
Originally Posted by Horseford
There was a recall. Mine would not lock when it was cold and wet.
Quote:
Originally Posted by waterzap99
Had same issue yesterday with the cold. Had to try it maybe 10 times. Pressing green button and trying again.
Ill just replace the latch
Interesting so is it software or hardware issue?
There were 10+ posts yesterday from owners who all had the same issue as I did. Several mentioned there was a recall for the motor that pulls down the trunk. No one posted the part number or the service bulletin but several said they purchased the replacement motor from MB for $450.
Thread Starter
Senior Member
Joined: Oct 2018
Posts: 380
Likes: 100
From: Orlando, FL
2017 550SL - 2018 560S
Yup, that was all it took. I thought I was in for a costly trip to the MB dealership. All it needed was a night in a slightly warmer garage and my trunk operation returned to 100% normal.
Joined: Nov 2016
Posts: 7,847
Likes: 3,498
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I had that problem a couple weeks ago when it was very cold out. The problem was that I was not at home and I had valuables in my trunk. I finally tried closing the trunk using the switch on the driver's door and it worked.
Super Member
Joined: Oct 2011
Posts: 697
Likes: 238
From: Illinois
S560/SL550/LS460/Q70L 5.6 AWD
Joined: Nov 2016
Posts: 7,847
Likes: 3,498
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Senior Member
Joined: Jan 2019
Posts: 480
Likes: 158
From: Philadelphia area
2014 SL65 AMG, 2018 S560
Clearly there's a problem if the trunk won't work in cold weather, as it should. I had the same problem with my SL (R231). The problem was the trunk latch. There are micro switches in the latch that give the computer position information. One of the switches was sticking in cold weather. There's a thread on this forum about it where I go into great detail about how I found it.
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Thread Starter
Senior Member
Joined: Oct 2018
Posts: 380
Likes: 100
From: Orlando, FL
2017 550SL - 2018 560S
A service bulletin for the trunk latch was issued to the 2017 & 2018 S Class. Trunk Lock S Class Bulletin.pdf. I ordered the correct part for my SL yesterday. 231-750-00-85
Lock
$433.92
1
$433.92
Subtotal: $433.92
Estimated Shipping to 34759 via Standard Shipping: $16.82
Total: $450.74
Lock
$433.92
1
$433.92
Subtotal: $433.92
Estimated Shipping to 34759 via Standard Shipping: $16.82
Total: $450.74
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Out Of Control!!
Joined: Sep 2018
Posts: 14,694
Likes: 4,584
From: unbegrenzt
2017 GLE350 4MATIC
One of the soft close doors on my Cayenne gets lazy (doesn’t work) intermittently below 20F. Works perfectly above that temp.
Not worth a warranty trip to the dealer.
Not worth a warranty trip to the dealer.
Newbie
Joined: Jun 2021
Posts: 7
Likes: 0
2018 s63
A service bulletin for the trunk latch was issued to the 2017 & 2018 S Class. Attachment 455528. I ordered the correct part for my SL yesterday. 231-750-00-85
Lock
$433.92
1
$433.92
Subtotal: $433.92
Estimated Shipping to 34759 via Standard Shipping: $16.82
Total: $450.74
Lock
$433.92
1
$433.92
Subtotal: $433.92
Estimated Shipping to 34759 via Standard Shipping: $16.82
Total: $450.74
