2021 G63 Check Engine Light
Thread Starter
Member
Joined: Jan 2008
Posts: 246
Likes: 72
From: Miami, FL
2021 Night Black Magno G63
2021 G63 Check Engine Light
Brought in my truck to the dealer as the check engine light was staying on despite the truck driving normal. This was on Tuesday morning of this week. Didn't really hear anything for 3 days so I contacted the dealer to see what the issue is and today they told me that they had to order a control module to fix the check engine light. They said it needs to be replaced. Has anyone had any experience with this? Apparently I won't have my truck back for a week to a week and a half in total, since I dropped it off on 2/6. The earliest the part should be at the dealer's is 2/13 or 2/14 and I don't know how long it takes to replace once the part arrives. Annoying!
Thread Starter
Member
Joined: Jan 2008
Posts: 246
Likes: 72
From: Miami, FL
2021 Night Black Magno G63
Member
Joined: Jul 2023
Posts: 215
Likes: 73
2019 G63 AMG & 2024 AMG GT63
Control module ???? Umm, would need a little more information on exactly what module to give you any actual information.
This sort of thing isnt all that uncommon, and thats for any car, not just MB, and not just G63. Sensors break, or have issues, or settings, or need to be recalibrated.
But so you know, asking if we've experienced a control module replacement and how long it should take is equivalent to asking your family how long surgery would take your doctor mentioned. "surgery for what?"..... " you know SURGERY! so I can get healed" .... "well we didnt even know you were sick, or what your symptoms are, or what the issue is, what is being operated on?" LOL Kinda need more to offer any information.
This sort of thing isnt all that uncommon, and thats for any car, not just MB, and not just G63. Sensors break, or have issues, or settings, or need to be recalibrated.
But so you know, asking if we've experienced a control module replacement and how long it should take is equivalent to asking your family how long surgery would take your doctor mentioned. "surgery for what?"..... " you know SURGERY! so I can get healed" .... "well we didnt even know you were sick, or what your symptoms are, or what the issue is, what is being operated on?" LOL Kinda need more to offer any information.
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,156
Likes: 1,770
From: Colorado
G550
Control module ???? Umm, would need a little more information on exactly what module to give you any actual information.
This sort of thing isnt all that uncommon, and thats for any car, not just MB, and not just G63. Sensors break, or have issues, or settings, or need to be recalibrated.
But so you know, asking if we've experienced a control module replacement and how long it should take is equivalent to asking your family how long surgery would take your doctor mentioned. "surgery for what?"..... " you know SURGERY! so I can get healed" .... "well we didnt even know you were sick, or what your symptoms are, or what the issue is, what is being operated on?" LOL Kinda need more to offer any information.
This sort of thing isnt all that uncommon, and thats for any car, not just MB, and not just G63. Sensors break, or have issues, or settings, or need to be recalibrated.
But so you know, asking if we've experienced a control module replacement and how long it should take is equivalent to asking your family how long surgery would take your doctor mentioned. "surgery for what?"..... " you know SURGERY! so I can get healed" .... "well we didnt even know you were sick, or what your symptoms are, or what the issue is, what is being operated on?" LOL Kinda need more to offer any information.
Thread Starter
Member
Joined: Jan 2008
Posts: 246
Likes: 72
From: Miami, FL
2021 Night Black Magno G63
Lol sorry guys I was just repeating what my service advisor texted me. I literally know NOTHING about automotive repair and don't want to know! Hopefully I get my truck back asap this week!
Member
Joined: Jul 2023
Posts: 215
Likes: 73
2019 G63 AMG & 2024 AMG GT63
But with that said, random check engine lights aren't uncommon for any car, and usually aren't something that should cause a big concern as long as its not something where the car is put into limp mode, or car wont start etc. It's likely something minor like a sensor needing to be replaced, or calibrated. And 7-10 days isn't out of the norm especially if its an uncommon sensor and they need to order it or its on back order etc.
Now if it's a CEL and dumping blue smoke out of the back, and wont go above 3000 RPM, may have a bigger issue on your hands. But the fact that it's 100% drivable would usually indicate it's a minor sensor, or minor item having to do with the ECU data etc.
Trending Topics
Newbie
Joined: Sep 2023
Posts: 4
Likes: 2
2020 g550
check engine light
Same thing just happened to me car runs fine and the check engine light came on wont go off no other system warning. mine is a 2020 g550 just off warranty any idea of the cost of the control unit?
QUOTE=EJKaufman;8921207]Brought in my truck to the dealer as the check engine light was staying on despite the truck driving normal. This was on Tuesday morning of this week. Didn't really hear anything for 3 days so I contacted the dealer to see what the issue is and today they told me that they had to order a control module to fix the check engine light. They said it needs to be replaced. Has anyone had any experience with this? Apparently I won't have my truck back for a week to a week and a half in total, since I dropped it off on 2/6. The earliest the part should be at the dealer's is 2/13 or 2/14 and I don't know how long it takes to replace once the part arrives. Annoying![/QUOTE]
QUOTE=EJKaufman;8921207]Brought in my truck to the dealer as the check engine light was staying on despite the truck driving normal. This was on Tuesday morning of this week. Didn't really hear anything for 3 days so I contacted the dealer to see what the issue is and today they told me that they had to order a control module to fix the check engine light. They said it needs to be replaced. Has anyone had any experience with this? Apparently I won't have my truck back for a week to a week and a half in total, since I dropped it off on 2/6. The earliest the part should be at the dealer's is 2/13 or 2/14 and I don't know how long it takes to replace once the part arrives. Annoying![/QUOTE]
MB World Stories
The Best of Mercedes & AMG
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,156
Likes: 1,770
From: Colorado
G550
No matter what your automotive skill levels are, no car owner should be without an OBDII scanner. $250 will buy a scanner that can provide you the fault codes that triggered the CEL, and provide you an opportunity to clear the codes if you're able to remedy the problem. I run diagnostic scans once a month as there are many faults that don't trigger the CEL, just to be sure some major problem isn't hatching.
Junior Member
Joined: Nov 2018
Posts: 62
Likes: 43
2021 G-63 Night Black Magno
I had a check engine light on a 2021 G63 back in January. They had it in the shop 4 days.
1. The coolant thermostat had to be replaced.
2. Had to replace the air filter for activated charcoal canister.
1. The coolant thermostat had to be replaced.
2. Had to replace the air filter for activated charcoal canister.
Thread Starter
Member
Joined: Jan 2008
Posts: 246
Likes: 72
From: Miami, FL
2021 Night Black Magno G63
Same thing just happened to me car runs fine and the check engine light came on wont go off no other system warning. mine is a 2020 g550 just off warranty any idea of the cost of the control unit?
I finally just got my truck back today after 15 days at the dealer!! Thankfully it was all covered by the 4 year factory warranty 🙏🏻 Here is what the write up said was the problem and I’ll list all the parts used below the write up:
41214 ELECTROHYDRAULIC VALVE BODY ASSEMBLY INTERNAL MALFUNCTION IT WAS VERIFIED THAT THE CHECK ENGINE LIGHT IS ON. SDS CONNECTED WITH BATTERY CHARGER AND FAULT CODE FOUND P07B700. AS PER GUIDED TEST, CHECK OIL LEVEL NECESSARY. OIL LEVEL CHECK PERFORMED AND OK. IPR TOOL PERFORMED AND STATES TO REPLACE VALVEBODY ASSEMBLY WITH ELECTROHYDRAULIC CONTROL UNIT. VEHICLE SET ON LIFT AND TRANSMISSION OIL AND PAN REMOVED. VALVEBODY ASSEMBLY REMOVED AND REPLACED. INITIAL STARTUP PERFORMED. STANDSTILL ADAPTATION AND VALVE FLUSHING PERFORMED. OIL LEVEL CHECK PERFORMED AND FAILED. VALVE BODY REMOVED FROM VEHICLE AGAIN AND INSPECTED. PRESSURE HOSE MISSING FROM REFURBISHED VALVEBODY. TRANSFERRED FROM OLD VALVE BODY TO NEW. INITIAL STARTUP PERFORMED AND PASSED WITH OIL LEVEL CHECK PERFORMED AGAIN WITH STANDSTILL ADAPTATION PERFORMED.
Part Number
725-270-55-09-87
Labor Type: W Part Description
Qty List
REMAN CTRR. 1 UNIT,
ELECTROHYD.
725-271-21-01 OVERFLOW PIPE 1
725-271-61-00 GUIDE TUBE 1
725-271-53-00-64 ELASTOMER- 1 MOLDED SEAL
002-990-95-03 SCREW W RND. 10 HEXAL. HEAD
004-990-75-12 SCREW W 14 COLLAR A DRIVE
002-989-06-03-12 TRANSMISSION 9 FLUID
725-270-31-14 OIL PAN 1
725-270-55-09-87 CORE RETURN -1
725-277-24-02 OIL GUIDE PIPE 0
725-277-68-00 OIL GUIDE PIPE 1
725-277-09-00 OIL GUIDE PIPE 1
002-989-06-03-12 TRANSMISSION 3 FLUID
QUOTE=EJKaufman;8921207]Brought in my truck to the dealer as the check engine light was staying on despite the truck driving normal. This was on Tuesday morning of this week. Didn't really hear anything for 3 days so I contacted the dealer to see what the issue is and today they told me that they had to order a control module to fix the check engine light. They said it needs to be replaced. Has anyone had any experience with this? Apparently I won't have my truck back for a week to a week and a half in total, since I dropped it off on 2/6. The earliest the part should be at the dealer's is 2/13 or 2/14 and I don't know how long it takes to replace once the part arrives. Annoying!
I finally just got my truck back today after 15 days at the dealer!! Thankfully it was all covered by the 4 year factory warranty 🙏🏻 Here is what the write up said was the problem and I’ll list all the parts used below the write up:
41214 ELECTROHYDRAULIC VALVE BODY ASSEMBLY INTERNAL MALFUNCTION IT WAS VERIFIED THAT THE CHECK ENGINE LIGHT IS ON. SDS CONNECTED WITH BATTERY CHARGER AND FAULT CODE FOUND P07B700. AS PER GUIDED TEST, CHECK OIL LEVEL NECESSARY. OIL LEVEL CHECK PERFORMED AND OK. IPR TOOL PERFORMED AND STATES TO REPLACE VALVEBODY ASSEMBLY WITH ELECTROHYDRAULIC CONTROL UNIT. VEHICLE SET ON LIFT AND TRANSMISSION OIL AND PAN REMOVED. VALVEBODY ASSEMBLY REMOVED AND REPLACED. INITIAL STARTUP PERFORMED. STANDSTILL ADAPTATION AND VALVE FLUSHING PERFORMED. OIL LEVEL CHECK PERFORMED AND FAILED. VALVE BODY REMOVED FROM VEHICLE AGAIN AND INSPECTED. PRESSURE HOSE MISSING FROM REFURBISHED VALVEBODY. TRANSFERRED FROM OLD VALVE BODY TO NEW. INITIAL STARTUP PERFORMED AND PASSED WITH OIL LEVEL CHECK PERFORMED AGAIN WITH STANDSTILL ADAPTATION PERFORMED.
Part Number
725-270-55-09-87
Labor Type: W Part Description
Qty List
REMAN CTRR. 1 UNIT,
ELECTROHYD.
725-271-21-01 OVERFLOW PIPE 1
725-271-61-00 GUIDE TUBE 1
725-271-53-00-64 ELASTOMER- 1 MOLDED SEAL
002-990-95-03 SCREW W RND. 10 HEXAL. HEAD
004-990-75-12 SCREW W 14 COLLAR A DRIVE
002-989-06-03-12 TRANSMISSION 9 FLUID
725-270-31-14 OIL PAN 1
725-270-55-09-87 CORE RETURN -1
725-277-24-02 OIL GUIDE PIPE 0
725-277-68-00 OIL GUIDE PIPE 1
725-277-09-00 OIL GUIDE PIPE 1
002-989-06-03-12 TRANSMISSION 3 FLUID
QUOTE=EJKaufman;8921207]Brought in my truck to the dealer as the check engine light was staying on despite the truck driving normal. This was on Tuesday morning of this week. Didn't really hear anything for 3 days so I contacted the dealer to see what the issue is and today they told me that they had to order a control module to fix the check engine light. They said it needs to be replaced. Has anyone had any experience with this? Apparently I won't have my truck back for a week to a week and a half in total, since I dropped it off on 2/6. The earliest the part should be at the dealer's is 2/13 or 2/14 and I don't know how long it takes to replace once the part arrives. Annoying!
Last edited by EJKaufman; Feb 21, 2024 at 11:03 PM.
Thread Starter
Member
Joined: Jan 2008
Posts: 246
Likes: 72
From: Miami, FL
2021 Night Black Magno G63
*Update* received the answer from my service advisor:
Good morning. No worries. The only part refurbished is the casing of the control unit /shell the rest is new.
Last edited by EJKaufman; Feb 22, 2024 at 09:39 AM.
Thread Starter
Member
Joined: Jan 2008
Posts: 246
Likes: 72
From: Miami, FL
2021 Night Black Magno G63
Check engine light just came on again this past Saturday. I've been driving the truck since then and it drives fine with no issues. I don't know what the problem is. I just went through this scenario 2 months ago and now the same thing again. Bringing my truck into the dealer tomorrow morning. Last time this happened I didn't have my truck for 2 weeks 
Hopefully whatever the issue is this time doesn't take as long to fix!!!! Truck is still under the 4 year/50k mile manufacturer warranty.
Hopefully whatever the issue is this time doesn't take as long to fix!!!! Truck is still under the 4 year/50k mile manufacturer warranty.
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,156
Likes: 1,770
From: Colorado
G550
Check engine light just came on again this past Saturday. I've been driving the truck since then and it drives fine with no issues. I don't know what the problem is. I just went through this scenario 2 months ago and now the same thing again. Bringing my truck into the dealer tomorrow morning. Last time this happened I didn't have my truck for 2 weeks Hopefully whatever the issue is this time doesn't take as long to fix!!!! Truck is still under the 4 year/50k mile manufacturer warranty.
Hopefully whatever the issue is this time doesn't take as long to fix!!!! Truck is still under the 4 year/50k mile manufacturer warranty.
MBWorld Fanatic!
Joined: Jun 2014
Posts: 2,030
Likes: 434
From: 🇨🇦
W463 G550 / C190 GTC //prev: W204 C63 507 / R170
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,156
Likes: 1,770
From: Colorado
G550
Seems strange that suddenly software determined emissions were out of compliance. Do you live in a metro area where you have to have your vehicle emissions checked annually?
Thread Starter
Member
Joined: Jan 2008
Posts: 246
Likes: 72
From: Miami, FL
2021 Night Black Magno G63
Nope, I live in Miami. And after I picked up the truck from the dealer on Saturday the check engine light came back on a little bit later the same day!!!! I'll need to bring it back to the dealer again on Monday. This will be my 3rd time bringing it in for this issue since February 2024! Ridiculous.
Thread Starter
Member
Joined: Jan 2008
Posts: 246
Likes: 72
From: Miami, FL
2021 Night Black Magno G63
Nope, I live in Miami. And after I picked up the truck from the dealer on Saturday the check engine light came back on a little bit later the same day!!!! I'll need to bring it back to the dealer again on Monday. This will be my 3rd time bringing it in for this issue since February 2024! Ridiculous.
