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
ticket
They are fixing their own work, or eating a charge to keep you. Write the promise.
Say · What is covered, for how long, and who authorized it?
Verbal goodwill evaporates at shift change. Get the RO number.