I believe this just happened to me. Didn't see a thread that addressed the possible causes.

I am pretty sure I have the SKREEM issue. First and second time, tries to start and shuts off, third time nothing. Disconnect battery, wait a bit, reconnect, rinse and repeat.
SRT6 42K miles. Have hardly had a problem in the 8 years I have owned it.
Trying to think of the cause or if there could be a loose connection somewhere.

1. I had hit a curb two blocks before I got to the parking lot. (Didn't notice having any problem getting to the parking lot after I hit the curb.) (Had one beer before driving the 3 miles, and getting too old I guess, lol.)
2. Within a few seconds of stopping the car, before getting out of the car etc., I tried to restart because I had forgotten something at home (damn beer). It was on this restart where the problem happened. (I was on the phone with my wife at the time as well. Cellular interference with SKREEM causing an issue on this immediate restart?)

So, perhaps this is a clue to what causes the SKREEM issue? Bump or immediate restart?

A third thing that could be related? I just started to have the sticky key issue. Never noticed it before brother in law had it happen to him driving my car a couple of weeks ago, and it has happened to me twice now while trying to restart. This may be a particular key fob though. Today when testing, it did the two try to start then stop. Third try I couldn't turn the key. Took my other key and it turned, but with the nothing happens result.

So anything from a connection issue that could cause it?

I also have an RCM issue. I had removed the 40 AMP fuse this summer to stop the air pump from constantly blowing. Had installed an Amazon RCM a couple of days ago in trying to fix this restart issue. Though it came to me as used, didn't fix problem, which I have learned enough now, that with these symptoms it wouldn't be a fix for my problem anyway.
I have seen this question asked a couple of times, so just to answer. Fan doesn't start running after the ignition is turned to on after 20 seconds.

 

Contact Josh Chase at the Mercedes Swap Shop.

 

You didn't look closely enough, there is ONE, yes ONE post in ONE thread that I know of that addresses it and it's by the inventor of the "SKREEMULATOR". His assertion is that many or most failures are due to the SKREEM "running out of codes". That is, there are only so many 'STARTS' built into the SKREEM. I have a hard time with this explanation, but fact is, he knows way more about the SKREEM than I do!

Speaking as a life-long electronics technician, I believe (but can't prove) that it is, at least at times, caused by electrical system disturbances that also have destroyed airbag, seatbelt and other modules. ANY electronic module with microprocessors, LSI chips or VLSI chips are susceptible to voltage spikes.

One way to put a stop to some potential spikes is to replace your battery at four year intervals (I do).

Another tip I use is to install one of these redundant ground cable mods (which I also did):
https://www.crossfireforum.org/forum...le-engine.html

I also keep my battery terminals CLEAN and TIGHT (the battery is your car's best electrical system filter, it acts as a HUGE, HUGE capacitor - but it can't do this effectively if there is resistance in the battery connections).

I also use conventional lead-acid batteries, because the new chemistries, from what I can tell, have an odd RC time-constant.

I"ve been here twelve years and been an ET 39 years, can't come up with much more than that.

 

Thanks for the contact info!

 

My battery is less than 2 years old. I will look into doing that redundant ground cable though, and look to take better care of the terminals since it is a concern keeping these cars going if the parts aren't produced anymore. I still get questions as to what year my car is, people thinking it is brand new. It is nice to have a great looking fun to drive car, but not so fun if repairs become a nightmare. It has been so solid for me up until now. Definitely the least issue car I have ever driven, so would like to keep it going.

I would be suspect of the too many starts being the issue. My SRT6 has only 43K miles on it. Bought it with 12K miles about 8 years ago. About a 20 mile ride to work making up a good share of those miles. So I would think my car has many less starts on it then others that have 90K on them etc.

 

Received the SKREEM, ECU, and keys back from Josh Chase at themercedesswapshop, and it all works great! What a relief! Thanks for all of the help here!

Was concerned about the possibility of the package of parts getting lost in delivery.
I paid for insured 2 day delivery from Phx to California. It took them an extra 3 days to get it there! Due to COVID there is no guarantee either.

I also put in a fixed RCM from TIGHE and installed a redundant battery cable.

 

Glad your back to being on the operational 'perma-grin' club!


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Are there any experienced controls EE's out there who can recommend some type of inline digital/analog noise suppression and/or filtering devices?