S211.222; Automatic tailgate not opening

[Oddih]

The automatic tailgate does not open. It starts to open, but then stops just after a few centimetres, as if the motor is not strong enough to open it completely.
Any suggestions what might be the problem?
Video: https://drive.google.com/open?id=1LKcnq327TCk5enu2GOQ_RCr1E5qBJqeU

 

[Blobcat]

Hello and welcome

Lubrication of the hinges required

 

[Oddih]

Thanks, that was what I hoped for. However, where to apply lubrication is not trivial (see image)

 

[malcolm E53 AMG]

You will need to oil the hinges and the balljoint on the end of the motor pushrod shaft which from your photo appears to be covered with a cap. I don’t suppose those parts ever see any maintenance be prepared to put plenty of oil on the hinges (you may need to apply several times as the hinges are now tight) I find engine oil works best

 

[Blobcat]

As per above, I'd look to remove the plastic trim cover to really get some oil into the hinge and shaft end.

 

[Oddih]

Thank you both, the job is done
Had to remove the plastic covers to get to the hinges. Used WD-40; only way I found to apply lubrication as the hinges where very difficult to get to.
New video: https://drive.google.com/open?id=1LZ0NeSR-L7N9ji8oHc0Cv10qtFosP8rH

 

[EmilysDad]

Thank you both, the job is done
Had to remove the plastic covers to get to the hinges. Used WD-40; only way I found to apply lubrication as the hinges where very difficult to get to.
New video: https://drive.google.com/open?id=1LZ0NeSR-L7N9ji8oHc0Cv10qtFosP8rH

Well done on getting it to work but ...

I'd want something a little more lasting than WD40 .....

 

[Oddih]

You are probably right.
This is what I've got, which one would be appropriate?

 

[Blobcat]

WD40 will clean it but not lubricate it for very long. You can get quite a few decent oils in spray cans with a tube. I use silicone grease and lubricant on my key locks and roof mechanism.

 

[EmilysDad]

You are probably right.
This is what I've got, which one would be appropriate?
View attachment 58492

The spray grease