MiiK350

iTrader: (8)

I see this everytime I open my hood to check things out on my 350. I've seen this on my IS250 as well. Coolant levels are as recommended. Is this normal?

weenstan

iTrader: (3)

There was a TSB for this, I had mine done a few years ago.

eggwoll

iTrader: (9)

Your water pump is probably going to go out soon.... happened to me

MiiK350

iTrader: (8)

Sweeeeet info, sorry about repost!

Hoovey689

iTrader: (16)

This has happened to my car too before. around 20K miles

edgeucated

iTrader: (4)

Im curious to know what cause this too.

This was happening to me until i bought in my car to have my water pump looked at. I had assume my water pump was going too but my SA told me my water pump was working fine; but I had them do a coolant leak check just to be sure. Ever since, I have had no coolant crusting.

Can you confirm this is the water pump going bad? because i have a pretty good relationship with my SA, i dont doubt him

vangis350

iTrader: (8)

I have the exact same problem with my 350.

sthakor92

Same problem! 250 with 12k miles

eggtart

where can i find TSB for this. not in FAQ thread. does it affect certain model year.

s6 4rings

iTrader: (1)

Lexus of Tampa Bay said it is normal, and not to worry, had water pump replaced cause of a different issue. Bad bearing causing lots of noise.

SD.IS

iTrader: (47)

I've been having this issue too.. Same question as everyone else I guess.

heyarms

iTrader: (5)

Have it too, never done anything about it either!

chris07is

iTrader: (10)

when i bought my car it was the same issue and took this to the dealer and they took care of it, and now its there again. it seems like its normal.. it took this picute on Oct 2007

laobo979

iTrader: (5)

Don't think it's the water pump. As the water pump is all the way toward the bottom. It leaks and wine that when you know it's bad. It cant spray up that high.

mjh09e

iTrader: (2)

Mine does this too...2011 is350 w/ 18k miles