Transmission Cooler GL550
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Joined: Jan 2015
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From: Illinois
2013 GL550 4Matic
Transmission Cooler GL550
Looking for some direction on where to get a tranny cooler for my GL550. I am planning on towing my boat this summer and would like to be proactive when it comes to the transmission. The boat and trailer combined weight is around 5000 lbs. Thanks for the help.
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Joined: Aug 2014
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GL550
Does anyone know what you actually get when you pay for the hitch package on the GL? IE: bigger rotors, bigger battery, bigger alternator and bigger cooler and electrics for the trailer?
Most trailering packages come with these items. Not so sure that Benz came with them?
Most trailering packages come with these items. Not so sure that Benz came with them?
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Joined: Jan 2013
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2021 V167
Trailer Tow package
The only thing I think you get when you have the factory tow bar is a trailer towing stabilizing module that works with the ABS that helps with trailer sway etc. I think they call it a SAM, signal acquisition module.
but, I have a lowly GL350...so maybe different on a high roller 550?
but, I have a lowly GL350...so maybe different on a high roller 550?
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Joined: Aug 2014
Posts: 198
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GL550
I think you're on the right track. I suspect it activates when you plug something in the tow plug? Otherwise how would the vehicle know you're towing?
On some vehicles I know when you plugged anything into the outlet lots of stuff happens to help the driver know they are possible towing something behind the vehicle.
As far as what I've been reading that about all you get with the tow package on the Benz.
I've not towed anything yet with mine. This summer I will. My trailer is all LED I changed over as my bulbs were burning out hand over fist. I've seen some scuttle about the LED's but not tested that theory yet. I've not had any issues running the trailer on my Honda or Lexus.
On some vehicles I know when you plugged anything into the outlet lots of stuff happens to help the driver know they are possible towing something behind the vehicle.
As far as what I've been reading that about all you get with the tow package on the Benz.
I've not towed anything yet with mine. This summer I will. My trailer is all LED I changed over as my bulbs were burning out hand over fist. I've seen some scuttle about the LED's but not tested that theory yet. I've not had any issues running the trailer on my Honda or Lexus.
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GL550
There is some cooler that sits in front of the radiator towards the bottom. Not sure it's a trans cooler or art of the A/C? One can only hope it's not intergraded into the radiator like the domestic stuff is.
I've seen some pretty stupid people on here pull way too much with the GL.
This vehicle is not set up to pull that kind of weight. An occasional tow here and there but not trekking cross country.
They see the 2" receiver and away they go! Asking for trouble!
I've seen some pretty stupid people on here pull way too much with the GL.
This vehicle is not set up to pull that kind of weight. An occasional tow here and there but not trekking cross country.
They see the 2" receiver and away they go! Asking for trouble!
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Joined: Aug 2014
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GL550
So the LEDs have not caused you any heartburn?
I saw someone having issues. Could have had a short too. Tripping the SAM?
I had nothing but issues with the traditional bulbs. I would start out working and by trips end dead in the water. Nothing worked. I had to get the trailer rep of load rite involved. They tore out the entire harness and started from scratch. They also converted everything over to LED. Have not had a problem since. I suspect it was a ground issue. The LED tail lights have their own ground where the bulbs used the mounting studs as the ground.
I'll report back this summer.
I saw someone having issues. Could have had a short too. Tripping the SAM?
I had nothing but issues with the traditional bulbs. I would start out working and by trips end dead in the water. Nothing worked. I had to get the trailer rep of load rite involved. They tore out the entire harness and started from scratch. They also converted everything over to LED. Have not had a problem since. I suspect it was a ground issue. The LED tail lights have their own ground where the bulbs used the mounting studs as the ground.
I'll report back this summer.
