2021 Toyota RAV4 Stalled With No Codes: The Battery Failed the Test Everyone Skipped
The RAV4 restarted after each stall and stored no DTCs. Intake smoke, purge and MAF checks passed, and idle relearn helped briefly. The battery failed a load test.
Tag BT360
Kia K4 Will Not Start but the Key Fob Still Locks the Doors? Check CA2515
Use a working-versus-failed key-fob matrix when a Kia K4 will not recognize the START button but other remote functions still work.
GM Ultium EV Fast-Charging at 140 kW or Less? Preserve Evidence Before Resetting
Separate normal fast-charge taper from GM's capacity-learn and low-voltage branches without destroying evidence.
Colorado or Canyon Chimes With No Message? Build an Event Log Before Replacing Parts
Turn a random Colorado or Canyon chime with no DIC message into a reproducible event instead of a guessing contest.
Stellantis B1552-2A and SOS Unavailable? The Code Name Is Not the Verdict
Treat Stellantis B1552-2A as a communication clue—not proof that the SOS button or overhead console has failed.
Forester EyeSight E5 or B28C7 in Heat and Humidity? Cool It, Then Save the Data
Turn a Forester EyeSight E5 or B28C7 event into a weather, cooldown, camera-temperature and software record before updating anything.
Mercedes Auxiliary Battery Malfunction: Identify the Architecture Before Buying a Battery
A Mercedes auxiliary-battery warning does not prove one universal battery. Identify the exact architecture, main supply, codes, and installed component first.