2004 CL500 722.901 Programming Question
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CL600
2004 CL500 722.901 Programming Question
I've searched and read for hours. Cant seem to find a definitive answer one way or the other.
Can a complete used 722.901 transmission be installed in another vehicle and be able to be programmed?
I've read that the conductor plate is permanently married to the original vehicle and then I've also read that they've been reprogrammed.
I've pulled a burned up 722.901 from my 2004 CL500 and installed a 53k Mile 722.901 from another vehicle. I HAVE NOT opened either transmission to swap valve bodies or conductor plates.
Is it possible for the replacement transmission to be programmed as it sits or not? My dealer says no, others seem to say their dealer had no issue.
Any help is greatly appreciated.
Can a complete used 722.901 transmission be installed in another vehicle and be able to be programmed?
I've read that the conductor plate is permanently married to the original vehicle and then I've also read that they've been reprogrammed.
I've pulled a burned up 722.901 from my 2004 CL500 and installed a 53k Mile 722.901 from another vehicle. I HAVE NOT opened either transmission to swap valve bodies or conductor plates.
Is it possible for the replacement transmission to be programmed as it sits or not? My dealer says no, others seem to say their dealer had no issue.
Any help is greatly appreciated.
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From: Welwyn, Herts, UK
2006 S600
I'm familiar with the 5-speed, but not the 7 speed. Everywhere I read, I hear that you need to programme the conductor plate on the 7, and it's not something you can do with a Chinese SDS (though I haven't tried - I was able to re-programme my SRS with mine).
What was the problem with the original tranny? Was there anything that would stop you re-using the old conductor plate and maybe valve block?
The transmission controller would have to re-learn the transmission, so the shifting would jerk or flare until the adaptations had been done.
Nick
What was the problem with the original tranny? Was there anything that would stop you re-using the old conductor plate and maybe valve block?
The transmission controller would have to re-learn the transmission, so the shifting would jerk or flare until the adaptations had been done.
Nick
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CL600
Original transmission suffers from extreme slipping and clutch material in the pan so its smoked.
I can swap my original valve body and conductor plate, but I'd rather keep the low mile valve body and plate if its possible.
I can swap my original valve body and conductor plate, but I'd rather keep the low mile valve body and plate if its possible.
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CL600
Didn't mean to leave this thread unfinished.
The answer to my original question is Yes, a transmission can be taken from one 722.9 car and put into another 722.9 car as a whole, with the valve body and conductor plate kept intact, and be used in the car complete.
The donor transmissions tcu needs to be reset to virgin status, the scn code needs to be pulled from the original tcu and loaded into the donor transmissions tcu.
This absolutely can be done. I've done it several times since I started this post last year.
The answer to my original question is Yes, a transmission can be taken from one 722.9 car and put into another 722.9 car as a whole, with the valve body and conductor plate kept intact, and be used in the car complete.
The donor transmissions tcu needs to be reset to virgin status, the scn code needs to be pulled from the original tcu and loaded into the donor transmissions tcu.
This absolutely can be done. I've done it several times since I started this post last year.
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1986 560 SEC
I have a 2004 CL500 and I’m experiencing slipping also. The symptoms are as follows: car shifts fine while cold, but as everything warms up, from a stop, the trans will slip/freewheel , then kinda clunk into second gear, and subsequent shifts are sloppy and seemingly not at appropriate shift points.
I was hoping that fluid may have been low, so I changed the fluid. Condition of fluid wasn’t too bad, not really burnt, just smelled “old “. Also, very little material in the pan. Also, the transmission doesn’t have any fault codes, other than slipping. Still after fluid change, same exact issue. I’ve been wanting to post and see is there something that’s failed and I can fix, other than a rebuild or different transmission?
Anyway, sharing your symptoms and experience would be helpful.
Thanks
ken Hartz
I was hoping that fluid may have been low, so I changed the fluid. Condition of fluid wasn’t too bad, not really burnt, just smelled “old “. Also, very little material in the pan. Also, the transmission doesn’t have any fault codes, other than slipping. Still after fluid change, same exact issue. I’ve been wanting to post and see is there something that’s failed and I can fix, other than a rebuild or different transmission?
Anyway, sharing your symptoms and experience would be helpful.
Thanks
ken Hartz
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CL600
The symptoms you describe point to tcm/conductor plate failure. You'll have to have the codes scanned to see what its unhappy about but you'll probably end up needing to replace it. If your car has never been updated than you probably have a vgs 1 plate which means you'll need to replace the valve body too.
You can order an fvdi online for under $200 and try to locate a used valve body and conductor plate. I found it sometimes cheaper to purchase a whole transmission and just pull the valve body out. I have bought low mile transmission's as low as $400. Some areas pricing is different though when it comes to used parts. It's best to use a 722.901 out of the same seriesof vehicle that you have now..
You can order an fvdi online for under $200 and try to locate a used valve body and conductor plate. I found it sometimes cheaper to purchase a whole transmission and just pull the valve body out. I have bought low mile transmission's as low as $400. Some areas pricing is different though when it comes to used parts. It's best to use a 722.901 out of the same seriesof vehicle that you have now..
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Mercedes
Last car I tried to just replace the conductor plate and didn’t fix it . Cost me $400 wasted considering labor charges. A used valve body would have cost me $700 parts and labor . Might have fixed it , might not .
In your other thread you mentioned you have 240,000 miles so I’d say st this point it doesn’t make financial sense to try partial fixes on your unit . Just get a low mileage used one . Remember as stated above , the donor transmissions tcu needs to be reset to virgin status, the scn code needs to be pulled from the original tcu and loaded into the donor transmissions tcu.
In your other thread you mentioned you have 240,000 miles so I’d say st this point it doesn’t make financial sense to try partial fixes on your unit . Just get a low mileage used one . Remember as stated above , the donor transmissions tcu needs to be reset to virgin status, the scn code needs to be pulled from the original tcu and loaded into the donor transmissions tcu.
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CL600
If his car has that many miles on it I would buy a low mile transmission and converter and swap the whole thing in. Although for the hour it takes to pull the valve body and cp and throw it in his transmission it may be worth a try if his trans fluid was clean and no clutch material was in the pan.
if it has the same symptoms then he'll already have the transmission in his possession to fix it and there will he no more programming required to try either of his valve body/cp units.
if it has the same symptoms then he'll already have the transmission in his possession to fix it and there will he no more programming required to try either of his valve body/cp units.
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1986 560 SEC
Thanks for the suggestions. I agree, it may be better to find a fairly low mileage 722.9 w/torque converter and just replace it. I’m gonna start sniffing around and see what I can find. My car has a few other issues, but it’s in great shape, and I would really like to keep it, but the transmission was the deciding factor. I think if I can be all in for about 1000 (doing the labor myself) then I think I’ll do it, and then continue my quest to become “code free” !!!!
