Reprogram Rear Steering from 4.5 to 10
Thread Starter
Member
Joined: Dec 2023
Posts: 148
Likes: 87
From: South Florida
2023 S580
Reprogram Rear Steering from 4.5 to 10
Anyone in the US done this? Does the dealer know how or what the procedure is?
I changed from 21s to 19s (loving it!!) and now what the dealer to change the RWS...when I stopped by, the service rep said in his 8 years there, nobody has ever done that so he is not sure what the process is or if it is even possible.
Anyone with experience with this?
I changed from 21s to 19s (loving it!!) and now what the dealer to change the RWS...when I stopped by, the service rep said in his 8 years there, nobody has ever done that so he is not sure what the process is or if it is even possible.
Anyone with experience with this?
Thread Starter
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Joined: Dec 2023
Posts: 148
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From: South Florida
2023 S580
Well, I am asking when I have it in next week for a bad door handle. I am reticent to ask EleBest due to his cost (seems very high) and also the fact that the next time I have it in to the dealer, if they reflash it, I wasted the $$ because he won't re-code it again and I think there is a high risk the dealer would do that.
Decisions, decisions...
Decisions, decisions...
Thread Starter
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Joined: Dec 2023
Posts: 148
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From: South Florida
2023 S580
I'll let you know after I take it in on Mon.
Thanks for the input, more helpful than you know.
Did you do the digital rain mod as well?
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23 S580 Executive
I had firmware updates twice after coding; it was not affected. On the other hand, it was less than half the price when I did it, so had there been facepalm action, it would have been a chunk less spendy. I'm not 100% on it, but after fixing the headlights, I think I would pay again: The matrix lighting is significantly better, and you know how it is once you've experienced better...
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Thread Starter
Member
Joined: Dec 2023
Posts: 148
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From: South Florida
2023 S580
I had firmware updates twice after coding; it was not affected. On the other hand, it was less than half the price when I did it, so had there been facepalm action, it would have been a chunk less spendy. I'm not 100% on it, but after fixing the headlights, I think I would pay again: The matrix lighting is significantly better, and you know how it is once you've experienced better...
I'll reach out on Tue or Wed next week and see if he will do a bundled deal. 😊
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From: Maryland
2024 S580
No, all I did was the ILS and the default drive mode to individual. I would have done more but the re-coding was a concern for me too
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23 S580 Executive
Wasn't much available but the lights and disable start/stop when I did it. Something could have been converted into the Maybach version, I didn't pay much mind because I’m not into that sort of thing.
As I recall, these things are modules, and not reflashed along with the system firmware, so the coding remains until the specific module itself gets an update, or a group of modules that includes the module gets updated That is the way I remember it, but I'd fact check it, some time has gone by at this point. Ele was pretty good about answering my questions, and I think he might be the one to ask.
As I recall, these things are modules, and not reflashed along with the system firmware, so the coding remains until the specific module itself gets an update, or a group of modules that includes the module gets updated That is the way I remember it, but I'd fact check it, some time has gone by at this point. Ele was pretty good about answering my questions, and I think he might be the one to ask.
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Current/Last 5-years:GLS;G70;Alpina B8;X7;Accord. Sold:X7,TeslaS;S560;S550,X5;530e;L.Navigator;LS460
I did ILS+, a few drive modes, and themes and snow mode unlocked/encoded by @EleBest on my GLS. All his codes have survived two dealer visitws, one of them specifically being for a new/full flash of the car software due to service reminder stuck on 365 days. He also honors free re-coding for the GLS and most other Mbemz, but I think there is a fee for W223 for re-coding. Ask him or check some of his posts under the X167 forum on this topic.
I believe he had successfully coded rear wheel steering to one of the forum members here from a thread i saw last year.
I believe he had successfully coded rear wheel steering to one of the forum members here from a thread i saw last year.
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From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
Yeah, these costs are continuing to be a detriment to independent mechanics. It's really contrary to the right to repair when the prices are a barricade to entry. Typically because new models are supported by the dealers in a warranty period, affordable aftermarket coding often lags a few years behind. These barricades are also why the costs of tuning are so high for many euro platforms. The large cost for an individual to download software is not comprehendible to me when the software is not individualized, such as when a car is dyno tuned, which can take hours of real time coding labor for each purchaser. I can remember tuning my b5 s4 and thinking that 450 bucks was a lot for a nice tune, or for the e55 for which a tune and a pulley were under a grand, and now newer mb models are near the 2-4k range for a reputable canned tune....
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From: South Florida
2023 S580
Oh well...
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E200 2010, G63 2018, E53s 2019, EQS53 Touring 2021, S500 2022, A200 2023
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23 S580 Executive
Seems like this cant be good for your business. Can you briefly explain what's gone on here to drive the costs so far up? I remember something with access, software, something along that line, and you had to pay for each. True, false, something else. Not asking for any top secret stuff, just an overview of how things got to where they are now. TIA
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From: Lowcountry, GA
'25 S580
Yeah, I guess MB codings are done very differently than what we're used to in the BMW world.
On G80/82 platform, a CS tune (transmission, traction, suspension, etc.) could be done for about $2-300
Most functional codings can be done using Bimmercode - a couple of hundred bucks for the app and the cables. Cheap. Easy.
Not so much with the MB, specifically the W223.
Wow. A blinker/lighting coding was almost $1,000
No freakin way.
On G80/82 platform, a CS tune (transmission, traction, suspension, etc.) could be done for about $2-300
Most functional codings can be done using Bimmercode - a couple of hundred bucks for the app and the cables. Cheap. Easy.
Not so much with the MB, specifically the W223.
Wow. A blinker/lighting coding was almost $1,000
No freakin way.
Thread Starter
Member
Joined: Dec 2023
Posts: 148
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From: South Florida
2023 S580
Seems like this cant be good for your business. Can you briefly explain what's gone on here to drive the costs so far up? I remember something with access, software, something along that line, and you had to pay for each. True, false, something else. Not asking for any top secret stuff, just an overview of how things got to where they are now. TIA
What's crazy is you can do a RWS 10 deg over-the-air reprogram on the EQS, but not the S580. You can select it in the app and pay for it as a very reasonable subscription cost. Wonder why they don't do that with the S?
So, even with my 8.5x19s, I will stick with the 4.5 steering. Oh well...
Last edited by regancc; Aug 8, 2025 at 04:22 PM.
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From: Maryland
2024 S580
Yeah, when I got the prices, I was aghast. I am sure Elebest is great at what he does but that is 4-5X what I think is reasonable. No idea why that coding is so expensive but that cost is prohibitive. Maybe some are willing to pay that which is why it remains so expensive, not sure. But I know I can't justify that spend.
What's crazy is you can do a RWS 10 deg over-the-air reprogram on the EQS, but not the S580. You can select it in the app and pay for it as a very reasonable subscription cost. Wonder why they don't do that with the S?
So, even with my 8.5x19s, I will stick with the 4.5 steering. Oh well...
What's crazy is you can do a RWS 10 deg over-the-air reprogram on the EQS, but not the S580. You can select it in the app and pay for it as a very reasonable subscription cost. Wonder why they don't do that with the S?
So, even with my 8.5x19s, I will stick with the 4.5 steering. Oh well...
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Yeah, when I got the prices, I was aghast. I am sure Elebest is great at what he does but that is 4-5X what I think is reasonable. No idea why that coding is so expensive but that cost is prohibitive. Maybe some are willing to pay that which is why it remains so expensive, not sure. But I know I can't justify that spend.
What's crazy is you can do a RWS 10 deg over-the-air reprogram on the EQS, but not the S580. You can select it in the app and pay for it as a very reasonable subscription cost. Wonder why they don't do that with the S?
So, even with my 8.5x19s, I will stick with the 4.5 steering. Oh well...
What's crazy is you can do a RWS 10 deg over-the-air reprogram on the EQS, but not the S580. You can select it in the app and pay for it as a very reasonable subscription cost. Wonder why they don't do that with the S?
So, even with my 8.5x19s, I will stick with the 4.5 steering. Oh well...
I also have 4.5. I see no need for 10. I can pivot this car into a tight space with ease. My $.02
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Joined: Dec 2023
Posts: 148
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From: South Florida
2023 S580
Truth. Which is why I walked away. I think (I have read here somewhere) that when you go from 4.5 to 10, it is a very noticeable difference, but not at that price. Can't bring myself to do that.
If his AWS servers are that expensive, time to shop for cloud services elsewhere - there are other places to host servers and not get killed by the infrastructure costs. But, on the other hand, if others are willingly paying that very steep price, I guess I would charge it as well!
Last edited by regancc; Aug 9, 2025 at 09:29 AM.
