The brake warning light on our '94 Toyota Estima diesel has started lighting up for a second or two while accelerating from stopped. It's been flashing occasionally - such as when going over sleeping policemen - for some weeks. The light is supposed to indicate that the handbrake is on (which it does OK) and I guess it's shared with other warning sensors but I don't know what. I looked for a fluid level sensor but there doesn't seem to be one, and anyway the level in the reservoir is OK. I don't know if there's a pad wear indicator but the light doesn't show when I'm braking and the lighting-up when accelerating seems too solid to be a dangling sensor wire shorting to anything.
I notice something electrical (see