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  #1  
Old 11-09-2018, 09:34 AM
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How do I translate wiring diagram part numbers into Mercedes part numbers?

If, on a scan or looking at a wiring diagram, I come up with a part number, how do i translate that into a Mercedes part number? For example, relay K75 on my CDI, how, without actually looking at the part, can I find the part number?

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  #2  
Old 11-09-2018, 10:41 AM
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Quote:
Originally Posted by shertex View Post
If, on a scan or looking at a wiring diagram, I come up with a part number, how do i translate that into a Mercedes part number? For example, relay K75 on my CDI, how, without actually looking at the part, can I find the part number?
You have to be quite careful with this - the ID number says what it is descriptively but the wiring diagram will not know the subtle differences such as round plug / square plug or which exact part number.


Mercedes are very good at documentation - the only way to get exactly the correct part (as when it left the factory) is to use EPC
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1961 Volvo PV544 Bare metal rat rod-ish thing

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Old 11-09-2018, 10:43 AM
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Quote:
Originally Posted by Stretch View Post
You have to be quite careful with this - the ID number says what it is descriptively but the wiring diagram will not know the subtle differences such as round plug / square plug or which exact part number.


Mercedes are very good at documentation - the only way to get exactly the correct part (as when it left the factory) is to use EPC
So how do I connect the dots between, say, the part that shows up in a fault code...like my K75 relay...and the EPC?
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06 E320 CDI "Benson", Platinum Blue, 181k mi, Stage 1 tune
06 E320 CDI "Rutherford", Black, 155k mi, Stage 1 tune
91 300D "Otis", Smoke Silver, 134k mi, wastegate conversion

19 Honda CR-V EX 17k mi
Thirteen other MB's owned and sold
1961 Very Tolerant Wife
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  #4  
Old 11-09-2018, 06:35 PM
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This is a weakness in the Mercedes system. The wiring diagram and EPC donít really cross reference. You need to identify the part in EPC from its verbal description on the schematic. EPC is the only PN source, other than whatís printed on the old part.
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  #5  
Old 11-10-2018, 09:17 AM
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Were can I get EPC for my 85sd's?
geazer2b
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  #6  
Old 11-10-2018, 09:58 AM
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Originally Posted by greazer2b View Post
Were can I get EPC for my 85sd's?
geazer2b
For the most recent part numbers (a few change and get replaced - most don't) you need to get a subscription via www.startekinfo.com


It used to be free in the US of A - but I understand you guys now have to pay too.


Otherwise there is ebay where people sell pirated downloaded versions - I've never bought one so I can't tell if they are good, reliable, or even safe


Another alternative is to look out for parts books - they do exist - fairly rare but have period correct numbers for the cars when they were released. Like I said some of the parts in these books will have been updated with different numbers - but it is something that if you were to go to the dealer with they'd be able to tell you the latest number.


In principle I think the best alternative is to make friends with your local MB parts counter and ask them to quote for what ever you need. Despite what many people the dealer isn't always that bad - OK sometimes they are silly dreadful - but I think you might be surprised how often Febi junk is more expensive than the dealer part...

...final option - join an official Mercedes club - you can then get "free" access to EPC so long as you pay your club subscription.
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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
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  #7  
Old 11-10-2018, 12:44 PM
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MBCA (MB Club of America) membership ($180/3 yrs) does not give you free EPC but you can get a 10 to 15 percent discount on parts at the dealership.

I was able to get the wholesale parts discount at my local dealer by giving them enough business (bought one used car there, multiple repairs I couldn’t handle myself, lots of miscellaneous parts). This has made them competitive with online and I don’t have to pay shipping. If they don’t have it they can get it within a couple of days and then I stop by and pick it up.

In SC we have to pay sales tax over the counter or if it is untaxed online we have to declare and pay it on our state income tax return, so there is no advantage either way for us on that front.
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  #8  
Old 11-10-2018, 11:17 PM
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www dot everythingbenz dot com

Not complete but not bad for free.
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  #9  
Old 11-10-2018, 11:52 PM
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Quote:
Originally Posted by jay_bob View Post
MBCA (MB Club of America) membership ($180/3 yrs) does not give you free EPC ...

That's a shame - the official clubs in Europe do / seem to. I'm about to join one here specifically for the EPC access.



Quote:
Originally Posted by Mike Murrell View Post
www dot everythingbenz dot com

Not complete but not bad for free.

I used that for years but I've found the Russian site to which that site links is not as complete as the one they used to use. It changed about 3 or 4 years ago. Pitty.
__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!
Reply With Quote
  #10  
Old 11-11-2018, 01:23 PM
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Join Date: Jun 2011
Posts: 255
Quote:
Originally Posted by Stretch View Post
For the most recent part numbers (a few change and get replaced - most don't) you need to get a subscription via www.startekinfo.com


It used to be free in the US of A - but I understand you guys now have to pay too.


Otherwise there is ebay where people sell pirated downloaded versions - I've never bought one so I can't tell if they are good, reliable, or even safe


Another alternative is to look out for parts books - they do exist - fairly rare but have period correct numbers for the cars when they were released. Like I said some of the parts in these books will have been updated with different numbers - but it is something that if you were to go to the dealer with they'd be able to tell you the latest number.


In principle I think the best alternative is to make friends with your local MB parts counter and ask them to quote for what ever you need. Despite what many people the dealer isn't always that bad - OK sometimes they are silly dreadful - but I think you might be surprised how often Febi junk is more expensive than the dealer part...

...final option - join an official Mercedes club - you can then get "free" access to EPC so long as you pay your club subscription.
Thanks Stretch! In the past 9 years have tried twice on eBay, once a CD & download both were a bust.
greazer2b

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