Coolant leaks from back of engine (1 Viewer)

[ontopofm]

Hi guys,

I came in for tranny flush and the dealer found the coolant leaks form back of engine. I checked all the hoses from top of engine and did not find any leaks or cracked hose. Anyone had this happened to your 200 before? Any hose I should look at close to the firewall? Thanks

 

[JohnJB]

You have likely discovered a valley plate leak as it often first shows up by leaking coolant down the back of the engine block. If you search in this forum you'll find more than a handful of threads devoted to diagnosing and fixing it.

LX570 Valley plate Leak

Started loosing coolant at 100K miles and found the dreaded valley plate leak. Fixed it myself.

forum.ih8mud.com

2013 Valley Leak @85K Miles!

Over the past few months, I have noticed the coolant overflow tank in our 2013 LC emptying out about once a month. I looked high and low and wasn't able to find any leaks, but a couple of weeks ago, I finally noticed a pink drip under the truck in the garage. I got underneath and saw pink...

forum.ih8mud.com

 

[jglc2013]

@JohnJB, you beat me to it. Looks like a valley leak to me.

 

[lx200inAR]

Also, happens to many Tundras, so a google of Tundra and valley leak will net a lot of info.

 

[ontopofm]

Thanks. It's getting fixed at a friend's shop.

 

[bloc]

Thanks. It's getting fixed at a friend's shop.

Supposedly there is an updated sealant that addresses the issue. Might be worth checking to see whether they are aware of this.

 

[ontopofm]

Getting this sealant 08826-00100