Here's why and what to consider:
* PCM Issues: The PCM controls many vehicle functions, including the engine and transmission (hence the check engine light) and potentially communicates with the airbag system (hence the airbag light). A malfunctioning PCM could send erratic signals, causing both lights to flash. This could be due to a failing PCM itself, a short circuit, or a power supply problem.
* Electrical Problems: A major electrical problem, like a severely corroded ground connection, a faulty alternator, or a short somewhere in the vehicle's wiring harness, could disrupt communication between various modules, leading to both lights flashing. This could be particularly problematic given the age of the vehicle.
* Data Bus Issues: Modern vehicles rely on data buses (like the Controller Area Network or CAN bus) for communication between various modules. A problem with the data bus itself could cause multiple systems to malfunction and trigger multiple warning lights.
What NOT to do: Do not continue driving the vehicle. Driving with a flashing airbag light is especially dangerous as it means the airbag system may not deploy correctly in an accident.
What to do:
1. Immediate Stop: Pull over to a safe location and do not drive the vehicle further.
2. Professional Diagnosis: This is not something you should attempt to diagnose or fix yourself without specialized tools and knowledge. Take your Explorer to a qualified mechanic or auto electrician as soon as possible. They will need to use a scan tool to read the diagnostic trouble codes (DTCs) stored in the PCM and other modules to pinpoint the exact cause.
3. Safety First: Given the severity of the issue, you should prioritize getting the vehicle properly diagnosed and repaired before attempting to drive it again.
The flashing lights indicate a serious problem requiring professional attention. Ignoring it could lead to further damage or even an accident.
