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.
Playbooks
Beginner · short stepsExpert · spec · code · mm
Pick the situation. Read the left column. Say that at the window.
Twelve owner scenarios. Beginner script + genius measurements. SaferCar patterns — not a pirated TSB book.
Playbooks · Pre-shop · Daily owner
Beginner script + genius measurements
Walk in with one sentence, one code if the light is on, and a list of numbers you will ask for. “They’re due” is not a reading.
You have a noise, a light, or a quote sitting on the kitchen table. You are about to stand at the writer’s window. This card is what you finish before you leave the driveway.
Beginner steps
0 / 6 beginner steps
Do not
Expert notes
Pad lining · mm
New friction material is often 10–12 mm. Many shops start the replace talk at 3–4 mm. Wear indicators usually squeal around 2–3 mm remaining. Metal-on-metal means the lining is gone — that is a different ticket than a squeal.
Rotor discard · mm
The hat is stamped MIN TH or a discard thickness. A tech with a mic writes the measured face vs that stamp. “They have grooves” is not a thickness. Pedal pulse is often thickness variation (DTV), measured, not felt with a fingernail.
Tread depth · 32nds
New all-seasons are often 10/32–11/32. Wet stopping falls off hard around 4/32. Wear bars are 2/32 — legal in many states, not a rain tire. Date code on the sidewall is week/year; age matters even with tread left.
Cold PSI · PSI
Door sticker, not the sidewall max. Check cold. TPMS often wakes around 25% under placard. “I filled them” without the number is how you buy an alignment you did not need.
Freeze-frame · DTC snapshot
The PCM stores RPM, load, mph, coolant temp, and fuel trims when the code set. A P0420 at 210 °F and 65 mph is a different story than the same code at 90 °F in the driveway. Ask them to print it.
Open a live desk
Talk
Advocate
Ask the bay to turn the sentence into questions before you drive over.
Owner
Owner desk
The same confidence checklist, tick-by-tick.
Script
Counter script
Printable three-line copy if this car is already identified.
Quote
Quote defense
Paste the RO when they hand you paper.
How-to
Talk to the shop
Beginner-friendly walk-through of the window.
Map
Directory
Rooftops near you. We do not book the stall.
SaferCar buckets this card answers: fuel · brakes · tires · steering · suspension · electrical · visibility · lighting · stability · hvac · exhaust · not CR
Related patterns
Common failures by symptom. SaferCar pointers — not pirated TSB PDFs.
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