Getting ready to change spark plugs in 2003 TLS myself. Haven't changed plugs in any cars for years but use to do it all the time. Older cars did not have the coils on top of each plug. Any tips or warnings when I go to do it or is it straight forward?

 

its pretty stright foward...take off cover, take off coil packs, take on plugs, put in new plugs, put back coil pack, put back engine cover walah

 

see threads, tool list like 3 and 6 inch extension put together to reach the rear plugs
Use anti sieze on the threads- not to much! and do 1 in the front to see how its done- then the rears because they are a pain, then the easy remaining fronts

See thread on Seafoam and do a cleaning before changing plugs

 

 

Tried a spark plug change today('03 TLS) and was able to change the front 3. Only problem I encountered was my spark plug holder which is correct size with foam insert got stuck on the new plug after each installation and I had to reach down there with long screwdriver to loosen it to remove it. I looked at back 3 plugs and access is so poor I got worried that I would not be able to work in there and if I had the same problem there would be no way I'd be able to retrieve the tool. Any suggestions? Does anything have to be removed for better access back there? thanks