Need the right number, not a vague answer? This section covers the car specs drivers look up most often, including oil capacity, tire pressure, lug nut torque, battery size, wiper blade size, and other everyday reference data. The goal is simple: fast, clear, model-focused information you can actually use.
How throttle-by-wire (electronic throttle control) replaces the accelerator cable with sensors, the ECM, and a motorized throttle body, what the Toyota unintended acceleration study found, and what goes wrong.
Learn how brake-by-wire works, how electro-hydraulic EHB differs from fully dry EMB, which cars and suppliers use it, and what warnings or service issues can appear.
How a steer-by-wire system replaces the steering shaft with sensors, an ECU, and an actuator motor, which 2026 cars have it (Cybertruck, Lexus RZ, Toyota bZ4X), why the US blocks some versions, and what can go wrong.
Jumper cable gauge chart by vehicle type: what AWG you actually need for cars, trucks, and diesels, why the number on the box is often a lie, and how copper-clad aluminum and length cut real capacity.
How ADAS diagnostic trouble codes work: the 5-character SAE J2012 format, why driver-assist faults are mostly C and U codes, generic versus manufacturer-specific, and why clearing them often needs recalibration.
R-134a vs R-1234yf: the chemistry, GWP, flammability, cost, and service-fitting differences, why cars switched, and how to tell which refrigerant your car needs.
The I-CAR OEM Calibration Requirements Search covers static, dynamic, and scan-only ADAS procedures by make, model, and repair event for 2016 and newer vehicles.
AEB is federally mandated for all new U.S. vehicles by September 2029 under FMVSS 127. LDW, BSW, and LKA remain voluntary and are evaluated under NCAP.
Wheel stud thread specs by manufacturer: M12x1.25, M12x1.5, M14x1.5, and half-inch-20 UNF. Covers Ford, GM, Toyota, Subaru, BMW, Mercedes, and how to verify your vehicle spec before ordering.
Bosch ADAS sensor specs: LRR4 radar range, SVC2 camera coverage, iBooster brake response, sensor locations, common faults, and production-car use.
