sounds like brake fluid level is still too low or the switch on the handbrake is faulty causing the light to stay on.
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It could also indicate that your rotors are wearing thin.
The brake light on the Vauxhall Vectra has a circle with 6 lines around it. When this light appears the vehicle is telling the driver that it is time to replace the brakes.
Changing the rear brake pads on a Vauxhall Vectra is similar to another device and can be done by hand or by a mechanic. The original brake pads need to be removed but not any of the brake wires. Then new pads should be put on.
You top it up via the brake master cylinder.
On the early "Vectra B" models it's under the trim immediately under the Hand-Brake lever.
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Good ones
The brake pipe size on a Vauxhall Vectra B is typically 3/16 inches (4.76 mm) in diameter. The couplings used for the brake lines are generally M10 x 1.0 for the fittings. It's essential to verify with specific vehicle manuals or consult with a mechanic for precise specifications based on the model year and configuration.
reverse then hit the brakes hard do this a few time and the self adjusters should adjust for you
There is an electronic relay switch which turns on the rear brake lights-It's located behind the brake pedal- It clicks when you push the pedal down, making contact.
You need to change the sensor wire on the brake pad, once they have worn through it needs to be replaced. Just bought a new one for my vectra from vauxhall and it cost around £15. Hope this helps.Lee
The brake pipes on a Vauxhall Vectra C typically have a diameter of 3/16 inch (4.76 mm). This size is standard for most brake lines used in many vehicles, ensuring compatibility with brake fittings and components. Always check the specific vehicle's service manual or consult with a mechanic for precise specifications and requirements.
this also illuminates when brake fluid is low either your brake pads are worn out or you have a leak