Sheriff of Mayberry
Join Date: Dec 2007
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First off, welcome to the TN forums!
No, I haven't had any issues with my RAV, but having worked on other AC systems, I'd guess they're replacing the hoses because they *might* have some debris in them. But I would try flushing them out rather than replacing them. Also, the receiver/drier should be replaced anytime the system is opened up.
You might take it to an independent AC repair shop for a second opinion and quote. A Toyota dealership is about the most expensive place you could have do the job. Sometimes it's best if the diagnosis is tricky, but I don't think that's the case here.
Doing the replacement work yourself isn't difficult, but recharging the system requires some expertise and specialized equipment that is usually not considered DIY turf. The system needs to be vacuumed out, and the proper amount & type of lubricant needs to be replenished in addition to the refrigerant. So you might wanna give that job to a pro.
2015 RAV4 Limited, AWD, tech pkg, Barcelona red metallic, 62k miles
1996 Avalon XLS, ABS brakes, super white II, acquired w/ 139k, now at 397k
1992 Camry LE, V6 (3VZ-FE), ABS brakes, dark emerald pearl, owned since new. Replaced HGs @332k, totaled at 384k miles