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What does the warning light of a circle and exclamation mark mean on BMW 318?

The warning light of a circle with an exclamation mark on a BMW 318 indicates a problem with the electronic brake force distribution (EBD) or the dynamic stability control (DSC) system. These systems are designed to help control the vehicle's braking and stability, so this warning light indicates a potential safety hazard.

If the EBD or DSC warning light appears, it's important to take the following steps:

1. Check the Brake Fluid: Start by checking the brake fluid level in the brake fluid reservoir. If it is low, add the recommended brake fluid as indicated in your vehicle's owner's manual. If the fluid level is full and the warning light remains on, proceed to the next step.

2. Inspect the Brake System: Visually inspect the brake system for any obvious leaks or damage to brake lines, brake pads, or brake calipers. If you notice any issues, address them promptly.

3. Reset the Warning Light: Sometimes, this warning light may appear due to a temporary glitch in the EBD or DSC system. Try resetting the system by turning the ignition off, waiting a few minutes, and then turning it back on. If the warning light stays off, the issue might be resolved.

4. Contact the Dealer: If the warning light persists, it's recommended to contact a BMW dealership or a qualified mechanic who can diagnose and repair the issue. They can run computer diagnostics to identify the source of the problem and provide the necessary repairs.

It's important to take this warning seriously, as a faulty EBD or DSC system can compromise your vehicle's braking and stability capabilities, potentially leading to safety risks. Ignoring this warning light and continuing to drive with this indicator illuminated is not recommended.