* Check engine light: This light indicates that there is a problem with the engine. It could be anything from a minor issue, such as a loose gas cap, to a more serious problem, such as a faulty oxygen sensor.
* ABS (anti-lock brakes) light: This light indicates that there is a problem with the ABS system. This system prevents the wheels from locking up during braking, and it is important for safe driving.
* SRS (supplemental restraint system) light: This light indicates that there is a problem with the SRS system. This system includes the airbags, seat belts, and other safety features.
* Oil pressure light: This light indicates that the oil pressure is low. This can be caused by a low oil level, a faulty oil pump, or a clogged oil filter.
* Coolant temperature light: This light indicates that the coolant temperature is high. This can be caused by a low coolant level, a faulty thermostat, or a water pump that is not working properly.
* Battery light: This light indicates that the battery is not charging properly. This can be caused by a faulty alternator, a bad battery, or a loose or damaged wire.
* Brake fluid light: This light indicates that the brake fluid level is low. This can be caused by a leak in the brake system, or by worn brake pads or shoes.
* Tire pressure light: This light indicates that the tire pressure is low. This can be caused by a flat tire, a slow leak, or a problem with the tire pressure monitoring system.
If you see any of these warning lights on your Volvo S40, it is important to have the vehicle inspected by a qualified mechanic as soon as possible.
