Hello all, my AHC pump went out, so I'm having a new one installed tomorrow (Lexus dealer in Vancouver, Canada).
The service guy I spoke to says they've been replacing several 200 series pumps recently, actually multiple times monthly is what he said... My pump on my 08 LX went out earlier this month, with only 206km (128k miles) on it.
Not sure why this is happening, perhaps just due to age? One of the other service guys there who also has a 2004 LX470 said the issues they're seeing are more on the 200 series, and not so much on the 100 series. His 100 series has 450+km on it with the original system and no issues. My last 470 also saw kms like that prior to having any issues...
I did my own fluid change last spring, but used factory fluid in the 2.5L tins (2) from the stealership.
After the full flush, I did top the reservoir up a bit higher than the amount that was in there earlier. Not a massive amount more, but a few extra graduations, just in case I did a sensor lift in the future (have not done this yet) I just wanted to make sure there was enough, and there was still plenty of room for excess fluid while in low mode.
Could that have caused it to go out early?
I'm scratching my head as to why that happened - my system/lines are not rusted out or anything. It's weird.