If the meter cluster showing a check indicator telling the brake lamp is faulty while driving and the brake lamp is flickering, likely you are facing brake lamp malfunction. This is probably cause by:
1. Natural aging causing light bulb broken.
2. Electronic control information error or the electronic component faulty causing over voltage which fused the bulb.
3. It might also due to the wiring is aged or the socket corroded causing poor connection which lead to the faulty.
Suggest to repair at workshop as soon as possible.
1. Check if there is check light or error message in the meter cluster, identify the malfunction item.
2. Take out the brake lamp bulb and check if it is broken.
3. Use the multimeter to check if the wiring harness has any abnormality, break, short circuit, corroded or poor connection.
4. Check if the brake lamp on off switch is broken or the signal is transmitting normally.
5. Based on the inspection outcome, replace the bulb, wiring harness or the on off switch.
5. If the issue is the wiring and wiring aged is not severe, can repair with soldering to save cost.