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Automotive tool & diagnostics answers
483 straight answers about scan tools, trouble codes, J2534 programming, ADAS, TPMS, scopes, batteries, A/C and the tools that keep a bay running. Written from the shop floor, reviewed regularly and expanded every week.
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Scan Tools & Bi-Directional Controls57 answersChoosing and using professional scan tools: bi-directional tests, live data, service resets, coding and adaptations.OBD-II & Trouble Codes62 answersWhat OBD-II trouble codes mean, how monitors and freeze frame work, and how to diagnose common codes the right way.J2534 & Module Programming25 answersPass-thru devices, OEM software subscriptions, secure gateways and safe module flashing.ADAS Calibration22 answersCamera and radar calibration: when it is required, static versus dynamic, shop setup and equipment.TPMS Service24 answersTire pressure monitoring sensors, relearn procedures, programmable sensors and TPMS tools.Oscilloscopes & Electrical Testing50 answersMeters, lab scopes, current probes, voltage drop, parasitic draw and network testing.Batteries, Charging & Jump Packs27 answersBattery testing, chargers, programming power supplies, jump starters and charging-system checks.A/C & Refrigerant (R-134a, R-1234yf, EPA 609)37 answersRecovery machines, vacuum and charging, leak detection, refrigerant identification and EPA Section 609.Key Programming & Immobilizers21 answersTransponder keys, immobilizer systems, all-keys-lost jobs and key programming tools.Scan Tool Updates & Subscriptions14 answersHow software update subscriptions work, what lapses when they expire, and renewing the right card.Hand Tools30 answersSockets, ratchets, wrenches, torque wrenches, pliers and screwdrivers for professional and serious DIY use.Power & Air Tools38 answersCordless and pneumatic impacts, ratchets, compressors and battery platforms.Specialty & Lifting Equipment40 answersEngine, cooling, brake, suspension, tire and inspection tools plus jacks, stands and shop equipment.Shop Safety18 answersPPE, high-voltage safety, lifting safety and everyday hazards in an automotive shop.Tool Buying & Comparisons18 answersWhich tool to buy, when to upgrade, comparing tool tiers and building out a shop.
Newest answers
- What should I look for in an auto-darkening welding helmet?
- Should a DIYer buy a TPMS tool?
- What should I do if a scan tool update fails?
- Should I replace TPMS sensors when I replace tires?
- Is it safe to keep driving with the TPMS light on?
- Why do some key programming jobs take a long time?
- Is a cordless grease gun worth it?
- What is an extended anvil impact wrench used for?
- What are jumbo combination wrenches used for?
- When should I use universal joint sockets?
- How do I replace an A/C service valve core?
- Why are R-1234yf service couplers different from R-134a couplers?
These answers are general guidance. Always follow the vehicle and tool manufacturer's procedures and check the tool maker's coverage list for your exact vehicle. Have a question we have not answered? Ask us.