Towing trailer
Anyone uses a GLE53 with air suspension to tow a trailer?
I have a travel trailer and have been using weight distribution bars even prior to my current GLE53.
I adjusted the bars nicely and mildly tight. After an hour of driving, the bars got loosened. Visually, it seems to me that the back of the car slightly went up.
Is it possible that the height of the air suspension can adjust itself based on some factors?
Thanks for your insights.




Anyone uses a GLE53 with air suspension to tow a trailer?
I have a travel trailer and have been using weight distribution bars even prior to my current GLE53.
I adjusted the bars nicely and mildly tight. After an hour of driving, the bars got loosened. Visually, it seems to me that the back of the car slightly went up.
Is it possible that the height of the air suspension can adjust itself based on some factors?
Thanks for your insights.
Anyone uses a GLE53 with air suspension to tow a trailer?
I have a travel trailer and have been using weight distribution bars even prior to my current GLE53.
I adjusted the bars nicely and mildly tight. After an hour of driving, the bars got loosened. Visually, it seems to me that the back of the car slightly went up.
Is it possible that the height of the air suspension can adjust itself based on some factors?
Thanks for your insights.
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You are correct, you need to disable the air suspension in order to set up the hitch properly.
My source, Can-Am RV in Ontario Canada, said to turn off the ignition and leave the door open.
Then perform your adjustments on your setup.
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Select your weight to distribution bar strength, to match that combined weight.
There is a diagram on the Mercedes hitch that shows capacities along with a diagram for ball placement in relation to the hitch.
And there is a payload sticker on your driver's door post, that shows your maximum payload and Axle gross weight ratings (GAWR). Payload is probably your limiting factor, and includes not only passenger and cargo, but that tongue weight and hitch weight is part of payload.
On our RV, the tongue weight is 740 lbs, and hitch weighs 90#. So I run 850 lb bars.
Sway control is most important. Friction sway control is the most effective, and I run a pair of cheap $40 friction sway bars which IMO are the most effective.
Always make sure your tongue weight is at least 10 - 12% of your total trailer weight, to discourage trailer sway.
Last edited by mikapen; May 20, 2022 at 10:34 AM.
You are correct, you need to disable the air suspension in order to set up the hitch properly.
My source, Can-Am RV in Ontario Canada, said to turn off the ignition and leave the door open.
Then perform your adjustments on your setup.
Select your weight to distribution bar strength, to match that combined weight.
There is a diagram on the Mercedes hitch that shows capacities along with a diagram for ball placement in relation to the hitch.
And there is a payload sticker on your driver's door post, that shows your maximum payload and Axle gross weight ratings (GAWR). Payload is probably your limiting factor, and includes not only passenger and cargo, but that tongue weight and hitch weight is part of payload.
On our RV, the tongue weight is 740 lbs, and hitch weighs 90#. So I run 850 lb bars.
Sway control is most important. Friction sway control is the most effective, and I run a pair of cheap $40 friction sway bars which IMO are the most effective.
Always make sure your tongue weight is at least 10 - 12% of your total trailer weight, to discourage trailer sway.




There are so many things that the car can do, to change its automatic leveling. Some are of these are with the ignition off, and some seem to sense the presence of a key.
So the best way immobilize the suspension on a new model Mercedes, my RV dealer says, is to turn the ignition off, and leave the door ajar.
I haven't set up my new 53 yet, or any other air suspended tow vehicle for that matter. But the guidance is the same from every thing I have read, regarding disabling a self leveling suspension.
Once your tow vehicle senses a seven pin is plugged in, I understand that it fixes the height at the "comfort" height, to keep the trailer leveling consistent.
Please verify that towing height, but once you have done that then you can choose your ball mount rise or drop.
And then begin setting up your weight distribution tensions.
Once you have your WDH adjusted and you turn on your car, your air suspension will take over and adjust for different loading and passengers, but the weight transfer from the WDH will remain constant, which is what you want.
Last edited by mikapen; May 24, 2022 at 06:51 PM.




You may have lucked out and have a sufficient percentage of the full trailer weight on the tongue (10 to 12%), which helps reduce sway tendencies.
But if you change your loading, that might be when you really need more weight transfer to be safe.
What's the total weight of your trailer and its tongue weight?
If it's under say 3500 lb you might get by with careful loading and simple sway control.
Above that and I'd want to size my bars correctly and do a full setup, starting from scratch with the correct ball height.
Good luck.



