On the 190's the sensor is just behind the front license plate.

As to the display. I have repaired an old one (new housing, new light bulb) -- easy stuff.

If it does not work, keep looking at ebay. I found one for $20.00 on ebay a couple of months ago for my 190. Works great.

__________________
Jovan

'84 (11/83) 190D 2.2 5-Speed; Silver/Blue; Motor No. 00354, 402k mi (340+kmi mine)

'89 Porsche 911 Turbo Coupe; Black/Black; 53kmi
'05 BMW 530i 6-Speed; 302kmi
'19 Range Rover; 30kmi