Mystery source of water
Thread Starter
Member
Joined: Sep 2011
Posts: 135
Likes: 2
2009 E350 4Matic Sport sedan
Mystery source of water
Our '09 E350 4Matic leaves a small puddle of clear water over night nearly every day.
The puddle is located approximately a few inches from the center of the left rear tire patch.
The liquid is clear, no coloration whatsoever, and has no odor. It is not coolant, it is not from driving in the rain, and it is not from my occasional washing of the car. The only recurring theme is it only happens in cooler temps; i.e., the winter months.
The car is always garaged overnight. The "problem" has been occurring for the past few months.
Could it be some type of condensation from the exhaust system? Or?
As far as I can tell, there's no operating problem with the car; its a great car. But this mystery has me baffled!
relinuca
The puddle is located approximately a few inches from the center of the left rear tire patch.
The liquid is clear, no coloration whatsoever, and has no odor. It is not coolant, it is not from driving in the rain, and it is not from my occasional washing of the car. The only recurring theme is it only happens in cooler temps; i.e., the winter months.
The car is always garaged overnight. The "problem" has been occurring for the past few months.
Could it be some type of condensation from the exhaust system? Or?
As far as I can tell, there's no operating problem with the car; its a great car. But this mystery has me baffled!
relinuca
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Joined: Jan 2016
Posts: 2,749
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From: In the Shadow of the Tetons
2013 ML350 Bluetec
Pull the bottom plastic panels and have a look? My first guess would be from the A/C condenser and the water that forms on it is finding its way out by your tire. But that's just a guess.
Thread Starter
Member
Joined: Sep 2011
Posts: 135
Likes: 2
2009 E350 4Matic Sport sedan
FWIW, during my last dealer appointment (oil/filter change), I asked the Tech about this.
He offered that it must be from the cat converter(s) as they create water as a byproduct to the "exhaust cleansing"...especially in cold weather conditions.
???
Oh well, I guess I'll worry about something else.
relinca
He offered that it must be from the cat converter(s) as they create water as a byproduct to the "exhaust cleansing"...especially in cold weather conditions.
???
Oh well, I guess I'll worry about something else.
relinca
