Temperature switch B11, Mercedes part number 005 545 03 24, is located in the head in between cylinders 3 and 4, left (driver's) side, behind the IP and under the intake manifold. The switch operates at 60C and tells the pre-glow relay to limit the duration of afterglow, reducing it from a maximum of 180 seconds to 30 seconds. If the switch fails, the afterglow time is fixed at 30 seconds.

Jeremy

__________________

"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .343,000 miles Wife's car
2005 E320 CDI . . 148,000 miles My car
Santa Rosa population 177,300 (2026 projected)
Total. . . . . . . . . . . . 668,300
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970