Ok, first off i tried to look for this post and couldnt find one, just letting everyone know, and if there is one im sorry for opening another one, i apologize to the pro's in the forum, my problem is that i had my car checked by a garage and my bank 1 O2 sensor is bad. As i was told this is the rear one. I just replaced the front one about 3 months ago and now the rear went. My problem is i need to know how to change the rear O2 sensor, i already have the sensor and just need to know its location and how to get to it. Its a 1996 ES300. Just hit the 125K mark, I have had it since it had 82K on it, and havent done much maintainance wise except for brakes, tires, and spark plugs. Is there anything i should be changing at the 125K mark? Also are Bosch Platinum +2 spark plugs good for this car? Sorry for all the questions, just dont want to make a stupid mistake that might end up costing me an engine. Can anyone please help? Thanks! :chairshot: