1998 320 clk suddenly died on freeway. Now won't crank or start. Electrical all working

Asked by May 14, 2017 at 05:39 AM about the 1998 Mercedes-Benz CLK-Class CLK 320 Coupe

Question type: Maintenance & Repair

help
bought a 1998 mercedes 320 clk drive it 10 miles on freeway and it stalled
going 65 mph.
towed to MB mechanic where he installed new F40 relay which didn't fix
problem. Ideas? Is next step ecu? can I buy one and  program it myself or
need to take car to MB place? help

3 Answers

295

I would take it to a better independent MB mechanic. It sounds like prior one is just throwing parts at it on a hunch. What codes are present? Does it start? What was the "F40" relay supposed to fix? Competent diagnosis is very important, otherwise you'll have a huge bill for little result......

Here's ia all the facts I know. battery is putting out 12.8 volts, key turns in ignition but does not crank. All light windows locks roof seats etc operate. We tested all fuses to be ok. When you pull starter relay and jump it turns over but no start. Could this be the esu and could it have failed out of blue while driving? OR???

also won't link to computer neither mine or mercedes unit

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