| Engine light with weak acceleration | Boost leak, ignition, fuel pressure, sensor data, exhaust restriction, turbo control or calibration | High if flashing, smoking or severely misfiring | Stop safely if the light flashes with rough running, smoke or major power loss. Otherwise request assessment before further driving. |
| Temperature warning or coolant loss | Leak, thermostat, pump, fan, radiator, hose or internal engine condition | Urgent | Stop safely, switch off the engine and arrange recovery for an overheating warning. Do not open the hot coolant cap. |
| Clutch slip or difficult selection | Clutch wear, flywheel, actuation, linkage, mounts, fluid or gearbox condition | Moderate to high | Avoid hard acceleration and inspect promptly |
| Brake vibration or pulling | Discs, pads, calipers, tires, wheels, hubs, suspension joints or alignment | High if braking is weak or unstable | Do not drive with weak or unstable braking. Arrange recovery; book inspection for noise or vibration without loss of control. |
| Several warnings after battery work | Low voltage, battery condition, connection, charging, fuse, ground or network fault | Depends on warning and drivability | Test voltage and scan related systems |
| 500e will not charge or become drive-ready | Charge supply, connector, communication, 12-volt supply, thermal or high-voltage control | High if heat, smell, smoke or impact is present | With heat, smoke or chemical odor, move away and contact emergency assistance. Do not charge or touch orange cables. |