Why does the wrench light flash and the Great Wall M4 fail to start?
2 Answers
The reason why the wrench light flashes and the Great Wall M4 fails to start is: the vehicle's battery is low on power and needs to be charged immediately. After charging, the vehicle can be started. Taking the 2015 Great Wall M4 1.5L AMT Comfort model as an example, its dimensions are 3995mm in length, 1728mm in width, and 1617mm in height, making it a compact 5-door, 5-seat SUV. The vehicle is equipped with a 1.5L naturally aspirated engine and a 6-speed mechanical automatic transmission, with a maximum power of 78kw and a maximum torque of 138nm. The front suspension type is MacPherson independent suspension, and the rear suspension type is a torsion beam composite suspension with a monocoque body structure.
I've driven a Great Wall M4 for several years and encountered the wrench light flashing with failure to start a few times. That time, the maintenance reminder light came on but wasn't addressed promptly, causing the system to automatically lock the starting function to prevent damage—it was nerve-wracking. After inspection, it turned out the key battery was weak, causing unstable recognition. Later at the repair shop, the technician said a flashing wrench light usually indicates the need for routine maintenance or inspection, and failing to reset it can mistakenly trigger the protection mechanism. I also experienced abnormal warning light flashing due to an aging battery with low voltage. It's recommended to first test the battery voltage and try replacing the key battery. If it still doesn't work, promptly contact a professional service station to reset the service reminder—don't force it, as it could affect safety. Regular maintenance can help avoid such troubles and ensure smooth, worry-free driving.
