Bluetec No Start - PeachParts Mercedes-Benz Forum

ILUVMILS · #1 12-14-2018, 08:04 PM

Quote:

Originally Posted by tjts1

.......My guess from experience with other computer driven cars and lack of codes is a failing crank sensor.

Find a competent mechanic and get this fixed. Eventually it won't start at all. It's a $17 part.

If this was a gas powered vehicle I’d agree but I’m still going with the low pressure pump being the culprit.............I’ve seen this happen MANY times......

tjts1 · #2 12-14-2018, 09:21 PM

Quote:

Originally Posted by ILUVMILS

If this was a gas powered vehicle I’d agree but I’m still going with the low pressure pump being the culprit.............I’ve seen this happen MANY times......

And cranking with no codes? I imagine there would at least be some power loss when it's running.

ILUVMILS · #3 12-15-2018, 10:23 AM

Quote:

Originally Posted by tjts1

And cranking with no codes? I imagine there would at least be some power loss when it's running.

If the pump quits while the engine is running it'll throw codes for low rail pressure. I've seen lots of crank no-starts due to faulty pumps with no codes stored. FWIW, the majority of cases I've seen have been on ML/GL's, but since it's so easy to diagnose it only makes sense to check the pump first......

tjts1 · #4 12-15-2018, 11:03 AM

Quote:

Originally Posted by ILUVMILS

If the pump quits while the engine is running it'll throw codes for low rail pressure. I've seen lots of crank no-starts due to faulty pumps with no codes stored. FWIW, the majority of cases I've seen have been on ML/GL's, but since it's so easy to diagnose it only makes sense to check the pump first......

Either way an MB dealer should be able to handle this. I'm really surprised they failed so badly.