Owner's book · not a shop
Know the car. Then the window. Factory specs in plain English — don't authorize until you can say this at the counter.
RO glossary
Beginner · short stepsExpert · spec · code · mm
Look up the slang on the ticket. Read the trap on that line.
Invoice slang: LOF, MPI, R&R, NTF, shop supplies, 'while we're in there.'
Invoice slang
Try cabin-filter, LOF, or flush
steering
The damper. Leaking or failed rebound. Springs are separate unless they sell a loaded assembly.
Say · Leak photo? Bounce test is weak evidence. Ask for the leak or the broken spring.
Four corners 'because we recommend in pairs' — pairs on an axle are fair; all four needs a reason.