Crown brake booster pressure sensor failure

I also drive a Crown, and I once experienced very similar symptoms. Did the reduced braking feel like you had to apply significantly more pressure to the brake pedal?

Yes, the brake pedal requires considerably more force. How did you resolve the issue?

Based on your description, it does sound like a faulty brake booster pressure sensor issue. I recommend you take your Crown to a reputable workshop for a proper diagnosis. It would be best to have it checked professionally.

Thanks! It was indeed the brake booster pressure sensor, and I had to replace it. The repair cost 90€. Your insights helped a lot.