I truly think that dealer raked you through the coals. The other day I cleaned the MAF sensor on my '01 4Runner (80,000 miles). When I plugged it back in and started the truck, I had the exact same three warning lights come on. I turned it off, undid the battery for 5 minutes, then reattached it. When I started the truck again, the lights were gone. And have remained out in the week following this.

That is an outragheous amount of money to pay - EVEN if the canister was bad.

Andreas

2001 4Runner SR5 4WD, Dorado Gold, 303,000+ miles
2014 Audi A4, Monsoon Gray
1995 Porsche 993, Polar Silver