1992 300e cruise engages but invariably shuts off like the brake was touched?? - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 07-28-2009, 10:34 AM Thread Starter
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Unhappy 1992 300e cruise engages but invariably shuts off like the brake was touched??

Hi!- from Chilliwack----Had a Suspension/ Exhaust inspection. I was told the driver side front has a blown ball joint and he wants $100 to fix if I get the part for him.
More importantly, During the inspection he used a second lift while on the hoist. The next time I used the cruise (3hrs later) it engaged, but for no particular reason, in a few seconds, it shut off just like the brake was touched. It will stay engaged for various amounts of time up to maybe 5-10 seconds max. When I use it to accelerate it works fine, but still disengages soon after the speed is set. It does this at all speeds. What do you suggest?
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post #2 of 2 (permalink) Old 07-28-2009, 01:38 PM
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Typically, it's either the cruise control actuator (mounted on engine beneath the intake) or the control module (inside cabin under front passenger carpet) that is the culprit.

Other suspects are stretched speedometer cable or malfunctioning brake light.
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