Spare RCM and BCM
Spare RCM and BCM
Last year I thought it might be a good idea to make sure the spare RCM and BCM worked so I installed them.
They worked fine so I left them in, the originals are in the trunk where the spare were.
Both were used items, the RCM cost me $45 about fifteen years ago, I had soldered the three usual points and inspected it for burnt contacts.
They worked fine so I left them in, the originals are in the trunk where the spare were.
Both were used items, the RCM cost me $45 about fifteen years ago, I had soldered the three usual points and inspected it for burnt contacts.
Join Date: Jun 2009
Location: Fort Worth, Texas
Age: 64
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Re: Spare RCM and BCM
Yes, they are model specific and probably the year specific. No programming required, so apart from the model requirement they are plug and play.
Last edited by onehundred80; 04-15-2023 at 05:46 PM.
Re: Spare RCM and BCM
You don’t want to have non running spares when you need them.
Re: Spare RCM and BCM
So, 6 specific BCM's for the NA market. Base/SE Coupe, Base/SE Roadster, Limited Coupe, Limited Roadster & SRT6, SRT6 Roadster. I'd expect other variants for UK, Aus, Europe etc.?
Re: Spare RCM and BCM
Carry a spare and get your original refurbished. Not only will the three bad solder joints be redone, other weak solder joints will be done.
The four main relays will be replaced AND the Me So Horny mod (horn works without the key) will be done!
Currently $52 with return shipping in the USA. Email tighed1@hotmail.com for the details.
Re: Spare RCM and BCM
Re: Spare RCM and BCM
Hi There! Sorry I'm a newbie owner I have an 2005 Limited Coupe.. When I looked on Ebay for a spare BCM They don't list which model and year they came from...So how am I supposed to know which one to purchase? Is there a part # to look for?
Just so I understand a bcm that came off of a 2005 base coupe won't work then right?
However a RCM off of any crossfire will work?
Sorry for all the questions.
Also wheres the bcm located on the car?
Thanks and sorry for all the questions
Just so I understand a bcm that came off of a 2005 base coupe won't work then right?
However a RCM off of any crossfire will work?
Sorry for all the questions.
Also wheres the bcm located on the car?
Thanks and sorry for all the questions
Join Date: Jun 2009
Location: Fort Worth, Texas
Age: 64
Posts: 13,469
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Re: Spare RCM and BCM
BCM and RCM are in the box next to the battery. Every RCM in all Crossfires, SLK320s and SLK230s are the same, cept the SLK230 RCM is about $45 cheaper but has all 15 amp fuses, one of our fuses has to be 20 amp - so I ordered an SLK230 RCM and transplanted the fuse.
BCMs dont go bad, I'd not concern myself with the BCM unless it is proven the BCM is bad. And Iv'e been here since 2009 and can think of maybe ONE BCM that failed.
In the SLK230, the yellow fuse is blue, our cars need a 20 amp (Yellow) fuse, there is no other difference in the RCMs between the '320 and '230.
BCMs dont go bad, I'd not concern myself with the BCM unless it is proven the BCM is bad. And Iv'e been here since 2009 and can think of maybe ONE BCM that failed.
In the SLK230, the yellow fuse is blue, our cars need a 20 amp (Yellow) fuse, there is no other difference in the RCMs between the '320 and '230.
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Deepsea21 (04-17-2023)
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