I was messing about in the garage when the wife pulled her Lexus in to her stall the other day and smelled the distinctive smell of hot coolant coming from her car. The car was just in for service the Friday before and nothing was said about a coolant leak or needing to add any... so I was a tad perplexed. I asked her if the car had been acting up or getting hot, which was met with a shrug and "not that I've noticed". So I backed the car out of the stall to see if there was any evidence of a leak on the garage floor. A tiny drop of orangish red liquid was present.... well crap what now? These cars have the plastic splash panels everywhere on the top and bottom and after removing the one that covers the front area and looking down and all around the radiator I could see coolant around the top tank, which can really only mean one of two things.... either the fluid was topped off and some was spilled or more likely a crack in the plastic tank. There was also quite a bit of coolant pooled on the lower splash panels and soaked through the A/C condenser, it was everywhere. I then pulled the core support cross brace/radiator holder downer thing which revealed the horizontal crack across the front of the tank, seeping. Time for a new one.... the car does have about 200k on it now. Luckily these aren't too terrible to do. It's all put back together sans all the splash panels at this time, as I wanted to make sure I/we could see any leaks on the ground.... you know just in case I did something wrong.