How to eliminate the fault light of BYD F3?
3 Answers
The method to eliminate the fault light of BYD F3 is: try to start and turn off the vehicle three times in a row, or turn off the engine and disconnect the negative terminal of the battery, wait for 30 seconds and then reconnect it, and then try to start. If it still cannot be eliminated, you need to go to the 4S store to use a fault detector for troubleshooting before it can be eliminated. The BYD F3 is a compact sedan manufactured by BYD, with a body length, width and height of 4533mm, 1705mm and 1490mm respectively, and a wheelbase of 2600mm. The front suspension of the car is a MacPherson independent suspension, and the rear suspension is a torsion beam non-independent suspension.
A while ago, the malfunction indicator light in my BYD F3 also came on. The easiest solution is to turn off the engine, disconnect the negative terminal of the battery for five minutes, and then reconnect it—sometimes the sensor's false alarm will clear itself. However, if the light remains on after restarting, don't push your luck. There are two scenarios: if the light comes on suddenly while driving and there are no red warning messages on the dashboard, you can still slowly drive to the repair shop; but if a red light appears along with a 'STOP' warning, pull over immediately, turn on your hazard lights, and call for roadside assistance. During regular maintenance, remember to ask the mechanic to plug in the diagnostic tool and clear any historical trouble codes. Last time, after I replaced the oxygen sensor, the code wasn’t cleared, and the malfunction light stayed on for a whole week before I realized what was wrong.
Last year, I helped a neighbor deal with the F3's engine light staying on. First, you need to check what the fault warning is: a yellow exclamation mark usually means you can keep driving, and you can read and clear the code with a cheap OBD scanner that costs just a few dozen bucks. But if the coolant temperature light turns red and beeps, you must stop immediately and wait for a tow truck. For cases where the light keeps coming back after being cleared, it's often related to the catalytic converter or emission issues—I've seen over a dozen cars with this recurring problem, and simply clearing the codes without fixing the underlying issue is pointless; they all ended up needing part replacements. Cars converted to run on natural gas are prone to false alarms with the fault light—after clearing the codes, you need to reset the ECU data to stabilize it.
