Dash Brake Light STAYS on 325i

[xjacx]

Hello all-

I'm considering a '92 325i.

The seller says the problem with this light staying on has been a problem for yrs. He says it's from the sensor and the part to repair this is unavailable (he's an amateur mechanic) -Is this possible, very expensive to repair, elusive, hopeless?
Your thoughts, please

BTW, car has 200k on it, seems to be well-maintained.

Thanks in advance,
Your feedback is greatly appreciated!

[marti5]

It will be the brake pad wear sensor front or rear I should have thought as for changing it 10 minute job after you have the wheel off,as for part avalability, Ive seen a page or two of them on Ebay UK also main dealer.....

[xjacx]

Thanx- had a feeling this was bs...