2015 GL550 suddenly loss power while on major busy road.
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Newbie
Joined: Dec 2014
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2015 GL550
2015 GL550 suddenly loss power while on major busy road.
I was driving my GL550 normally at a busy highway when suddenly the "Presafe currently limited", check engine and other faults lit up. At that very moment I noticed that the gas pedal seemed like it suddenly died. I fully stepped on the gas to pull to the road shoulder, but the car is not responding. I was so worried as others might hit me from behind. I turned on the hazard and managed to cut thru the lanes using the momentum while everyone honks at me. I put it in Park and the engine pulsated and became rough. I turned it off and restart it, put it in D and the car starts to move again. I told Mbrace I don't want to drive it and I need to take it to the nearest dealer asap before they close. Mbrace said it will take time for them to send a flat bed and the truck can only accommodate 2 people (theres 3 of us). Eventually I drove the car to the dealer.
Did this happen to any of you? I'm just glad it didn't happen on the freeway. Imagine if I'm on the fast moving freeway and suddenly this car just loss power in middle lanes. That is one very dangerous situation. I'm very disappointed
Did this happen to any of you? I'm just glad it didn't happen on the freeway. Imagine if I'm on the fast moving freeway and suddenly this car just loss power in middle lanes. That is one very dangerous situation. I'm very disappointed
Last edited by denmaster; Jan 7, 2015 at 01:35 AM.
MBWorld Fanatic!
Joined: Mar 2007
Posts: 1,653
Likes: 7
From: Central Pa.
2013 GL450 (traded for 2015 Escalade), 2012 Corvette, 2014 Ford Fusion, Previous: 2007 GL450, 2011
I was driving my GL550 normally at a busy highway when suddenly the "Presafe currently limited", check engine and other faults lit up. At that very moment I noticed that the gas pedal seemed like it suddenly died. I fully stepped on the gas to pull to the road shoulder, but the car is not responding. I was so worried as others might hit me from behind. I turned on the hazard and managed to cut thru the lanes using the momentum while everyone honks at me. I put it in Park and the engine pulsated and became rough. I turned it off and restart it, put it in D and the car starts to move again. I told Mbrace I don't want to drive it and I need to take it to the nearest dealer asap before they close. Mbrace said it will take time for them to send a flat bed and the truck can only accommodate 2 people (theres 3 of us). Eventually I drove the car to the dealer.
Did this happen to any of you? I'm just glad it didn't happen on the freeway. Imagine if I'm on the fast moving freeway and suddenly this car just loss power in middle lanes. That is one very dangerous situation. I'm very disappointed
Did this happen to any of you? I'm just glad it didn't happen on the freeway. Imagine if I'm on the fast moving freeway and suddenly this car just loss power in middle lanes. That is one very dangerous situation. I'm very disappointed
Doubt that many have had anything that serious.....sounds like a major fault with the engine control module...certainly should not be one of those problems where the service people say " could not see any evidence of the issue!" Keep us informed..... glad you got off the road safely!
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2024 GLS 450 AMG Package 2024 GLC 43 AMG
same exact thing happened to me in my 2011 LR4. The entire car basically shut down and lowered to the ground. Ended up being a small break switch ($25 part). Keep us posted and I'm glad you made it out safely.
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Joined: Nov 2007
Posts: 1,425
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From: Minnesota
2015 Ram 2500, former 2013 GL350, 2007 GL450
There were a few threads on the X164 forum of this happening. You might want to do a search there. Remedies range from happened once, never again, to long heavy key chain hitting the ignition switch, to fuel issues, to crankshaft position sensors.
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Thread Starter
Newbie
Joined: Dec 2014
Posts: 11
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2015 GL550
UPDATE:
Service Rep called and told me that my GL550 is working fine right now even without doing any repair ( so it fixed itself?). There's no fault/error codes right now but there's a lot of error codes from stored memory including control unit error. I mentioned that its perfectly fine too when I started driving that GL, until it stalled in the middle of the road. There's no way it will repair itself. Whatever those defective parts could strike again anytime and hopefully not in a major freeway. Safety is big concern here if it will stall again. I asked if they ordered the parts. I was told that stored error codes don't necessarily mean that certain parts need to be replaced. He still need to open a case with MB before proceeding with the next step. I told him I'm not driving that GL until they perform the necessary repairs. The safety of my family as well as other drivers behind me are all at stake here. He assured me he will get it done next week.
Whats surprising is that I was told that stored error codes on the control unit doesn't necessarily means it needs to be replaced. This control unit has the potential to cause catastrophic accident as a result of this sudden loss of power and stalling in the middle of the road or freeway. A case need to be submitted to MB so it's up to MB now if they will replace any parts. My concern is what if MB say "OK since there's no fault/error codes RIGHT NOW, that GL is fine. It fixes itself, release it back to the owner".
Service Rep called and told me that my GL550 is working fine right now even without doing any repair ( so it fixed itself?). There's no fault/error codes right now but there's a lot of error codes from stored memory including control unit error. I mentioned that its perfectly fine too when I started driving that GL, until it stalled in the middle of the road. There's no way it will repair itself. Whatever those defective parts could strike again anytime and hopefully not in a major freeway. Safety is big concern here if it will stall again. I asked if they ordered the parts. I was told that stored error codes don't necessarily mean that certain parts need to be replaced. He still need to open a case with MB before proceeding with the next step. I told him I'm not driving that GL until they perform the necessary repairs. The safety of my family as well as other drivers behind me are all at stake here. He assured me he will get it done next week.
Whats surprising is that I was told that stored error codes on the control unit doesn't necessarily means it needs to be replaced. This control unit has the potential to cause catastrophic accident as a result of this sudden loss of power and stalling in the middle of the road or freeway. A case need to be submitted to MB so it's up to MB now if they will replace any parts. My concern is what if MB say "OK since there's no fault/error codes RIGHT NOW, that GL is fine. It fixes itself, release it back to the owner".
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A gaggle of MB's
Strong suggestion - call Mercedes Customer Care Fri morning (800) 367-6372 - report the date of the incident, what happened, when it went into service - and share you "safety concerns" that your dealer service dept is unwilling to address...
In your specific situation - this situation needs to be "factually" escalated thru Customer Care NOW
In your specific situation - this situation needs to be "factually" escalated thru Customer Care NOW
Senior Member
Joined: Dec 2012
Posts: 379
Likes: 1
GL550
UPDATE:
Service Rep called and told me that my GL550 is working fine right now even without doing any repair ( so it fixed itself?). There's no fault/error codes right now but there's a lot of error codes from stored memory including control unit error. I mentioned that its perfectly fine too when I started driving that GL, until it stalled in the middle of the road. There's no way it will repair itself. Whatever those defective parts could strike again anytime and hopefully not in a major freeway. Safety is big concern here if it will stall again. I asked if they ordered the parts. I was told that stored error codes don't necessarily mean that certain parts need to be replaced. He still need to open a case with MB before proceeding with the next step. I told him I'm not driving that GL until they perform the necessary repairs. The safety of my family as well as other drivers behind me are all at stake here. He assured me he will get it done next week.
Whats surprising is that I was told that stored error codes on the control unit doesn't necessarily means it needs to be replaced. This control unit has the potential to cause catastrophic accident as a result of this sudden loss of power and stalling in the middle of the road or freeway. A case need to be submitted to MB so it's up to MB now if they will replace any parts. My concern is what if MB say "OK since there's no fault/error codes RIGHT NOW, that GL is fine. It fixes itself, release it back to the owner".
Service Rep called and told me that my GL550 is working fine right now even without doing any repair ( so it fixed itself?). There's no fault/error codes right now but there's a lot of error codes from stored memory including control unit error. I mentioned that its perfectly fine too when I started driving that GL, until it stalled in the middle of the road. There's no way it will repair itself. Whatever those defective parts could strike again anytime and hopefully not in a major freeway. Safety is big concern here if it will stall again. I asked if they ordered the parts. I was told that stored error codes don't necessarily mean that certain parts need to be replaced. He still need to open a case with MB before proceeding with the next step. I told him I'm not driving that GL until they perform the necessary repairs. The safety of my family as well as other drivers behind me are all at stake here. He assured me he will get it done next week.
Whats surprising is that I was told that stored error codes on the control unit doesn't necessarily means it needs to be replaced. This control unit has the potential to cause catastrophic accident as a result of this sudden loss of power and stalling in the middle of the road or freeway. A case need to be submitted to MB so it's up to MB now if they will replace any parts. My concern is what if MB say "OK since there's no fault/error codes RIGHT NOW, that GL is fine. It fixes itself, release it back to the owner".
Thread Starter
Newbie
Joined: Dec 2014
Posts: 11
Likes: 0
2015 GL550
UPDATE:
Dealer said they cannot find any fault codes or problems or caused of the sudden loss of power/stalling on my 2015 GL550. Rep said the only code that was stored is a code for "CLEARING FAULT CODES". (Yes its just a code for clearing codes). I told him that clearing those codes will just probably remove the "check engine light" and other error displayed on the instrument panel, BUT the underlying cause of stalling is still there and could strike anytime.
It appears that I have a brand new 1 1/2 month old GL550 with a serious defect that can injured or killed us or any driver near me, and that fault code is not recorded in the ECU. This SUV has serious problem with no solution because the dealer cannot find whats causing it. Therefore this GL is infinitely irreparable. I can't believed this is happening in this expensive vehicle.
I already contacted MB Customer Care. Let's see how all of this will unfold. I am ready to exercise my rights as a consumer to protect the safety of my family and those drivers around me. Thanks for all of your advises and feedback.
Dealer said they cannot find any fault codes or problems or caused of the sudden loss of power/stalling on my 2015 GL550. Rep said the only code that was stored is a code for "CLEARING FAULT CODES". (Yes its just a code for clearing codes). I told him that clearing those codes will just probably remove the "check engine light" and other error displayed on the instrument panel, BUT the underlying cause of stalling is still there and could strike anytime.
It appears that I have a brand new 1 1/2 month old GL550 with a serious defect that can injured or killed us or any driver near me, and that fault code is not recorded in the ECU. This SUV has serious problem with no solution because the dealer cannot find whats causing it. Therefore this GL is infinitely irreparable. I can't believed this is happening in this expensive vehicle.
I already contacted MB Customer Care. Let's see how all of this will unfold. I am ready to exercise my rights as a consumer to protect the safety of my family and those drivers around me. Thanks for all of your advises and feedback.
Member
Joined: Jan 2003
Posts: 238
Likes: 10
UPDATE:
Dealer said they cannot find any fault codes or problems or caused of the sudden loss of power/stalling on my 2015 GL550. Rep said the only code that was stored is a code for "CLEARING FAULT CODES". (Yes its just a code for clearing codes). I told him that clearing those codes will just probably remove the "check engine light" and other error displayed on the instrument panel, BUT the underlying cause of stalling is still there and could strike anytime.
It appears that I have a brand new 1 1/2 month old GL550 with a serious defect that can injured or killed us or any driver near me, and that fault code is not recorded in the ECU. This SUV has serious problem with no solution because the dealer cannot find whats causing it. Therefore this GL is infinitely irreparable. I can't believed this is happening in this expensive vehicle.
I already contacted MB Customer Care. Let's see how all of this will unfold. I am ready to exercise my rights as a consumer to protect the safety of my family and those drivers around me. Thanks for all of your advises and feedback.
Dealer said they cannot find any fault codes or problems or caused of the sudden loss of power/stalling on my 2015 GL550. Rep said the only code that was stored is a code for "CLEARING FAULT CODES". (Yes its just a code for clearing codes). I told him that clearing those codes will just probably remove the "check engine light" and other error displayed on the instrument panel, BUT the underlying cause of stalling is still there and could strike anytime.
It appears that I have a brand new 1 1/2 month old GL550 with a serious defect that can injured or killed us or any driver near me, and that fault code is not recorded in the ECU. This SUV has serious problem with no solution because the dealer cannot find whats causing it. Therefore this GL is infinitely irreparable. I can't believed this is happening in this expensive vehicle.
I already contacted MB Customer Care. Let's see how all of this will unfold. I am ready to exercise my rights as a consumer to protect the safety of my family and those drivers around me. Thanks for all of your advises and feedback.
I totally agree with you, as I've had those error messages pop up as well before. It is scary as these are safety features that MB is known for and our lives are dependent on it. If it can just fail at this high of a failure rate, we mind as well not get a MB, and get like a Dodge or something that has less of these tech and half the price.
The engine just shutting down at a high speed, and throttle dead, and NO ERROR CODES, is unbelievable I think. The computer has tick to tick data recorded and a failure is easily found. I can only think of in your case is that the problem was so big that even the data recorder failed thus no records.
I hope this doesn't happen to me or any other people.
Thread Starter
Newbie
Joined: Dec 2014
Posts: 11
Likes: 0
2015 GL550
Update.
It's pushing 2 weeks now and my 2015 GL550 still at the shop. Dealer said MB agreed to replace ECU. I asked if the fault code now shows ECU was acting up. They said no fault codes showing ECU has problem. But they will replace it anyway since that is the brain of the car. I told them ECU also relies on many other sensors and modules in the vehicle. I felt uncomfortable knowing that the fix was not truly intended for the the defective part because they could not identify what's the cause of the stalling. I'm not satisfied with the " let's replace this and if it did not fix it, replace the next part" approach. Given the danger and unpredictability of the nature of the stalling, They better figure out what is the cause. Talked to MB case manager several times and requested to replace more sensors. I still don't see where this issue is going. Looks like I have no choice but to get the GL back and hope it won't happen on the freeways.
It's pushing 2 weeks now and my 2015 GL550 still at the shop. Dealer said MB agreed to replace ECU. I asked if the fault code now shows ECU was acting up. They said no fault codes showing ECU has problem. But they will replace it anyway since that is the brain of the car. I told them ECU also relies on many other sensors and modules in the vehicle. I felt uncomfortable knowing that the fix was not truly intended for the the defective part because they could not identify what's the cause of the stalling. I'm not satisfied with the " let's replace this and if it did not fix it, replace the next part" approach. Given the danger and unpredictability of the nature of the stalling, They better figure out what is the cause. Talked to MB case manager several times and requested to replace more sensors. I still don't see where this issue is going. Looks like I have no choice but to get the GL back and hope it won't happen on the freeways.
MBWorld Fanatic!
Joined: Mar 2007
Posts: 1,653
Likes: 7
From: Central Pa.
2013 GL450 (traded for 2015 Escalade), 2012 Corvette, 2014 Ford Fusion, Previous: 2007 GL450, 2011
Update.
It's pushing 2 weeks now and my 2015 GL550 still at the shop. Dealer said MB agreed to replace ECU. I asked if the fault code now shows ECU was acting up. They said no fault codes showing ECU has problem. But they will replace it anyway since that is the brain of the car. I told them ECU also relies on many other sensors and modules in the vehicle. I felt uncomfortable knowing that the fix was not truly intended for the the defective part because they could not identify what's the cause of the stalling. I'm not satisfied with the " let's replace this and if it did not fix it, replace the next part" approach. Given the danger and unpredictability of the nature of the stalling, They better figure out what is the cause. Talked to MB case manager several times and requested to replace more sensors. I still don't see where this issue is going. Looks like I have no choice but to get the GL back and hope it won't happen on the freeways.
It's pushing 2 weeks now and my 2015 GL550 still at the shop. Dealer said MB agreed to replace ECU. I asked if the fault code now shows ECU was acting up. They said no fault codes showing ECU has problem. But they will replace it anyway since that is the brain of the car. I told them ECU also relies on many other sensors and modules in the vehicle. I felt uncomfortable knowing that the fix was not truly intended for the the defective part because they could not identify what's the cause of the stalling. I'm not satisfied with the " let's replace this and if it did not fix it, replace the next part" approach. Given the danger and unpredictability of the nature of the stalling, They better figure out what is the cause. Talked to MB case manager several times and requested to replace more sensors. I still don't see where this issue is going. Looks like I have no choice but to get the GL back and hope it won't happen on the freeways.
Member
Joined: Jan 2003
Posts: 238
Likes: 10
Update.
It's pushing 2 weeks now and my 2015 GL550 still at the shop. Dealer said MB agreed to replace ECU. I asked if the fault code now shows ECU was acting up. They said no fault codes showing ECU has problem. But they will replace it anyway since that is the brain of the car. I told them ECU also relies on many other sensors and modules in the vehicle. I felt uncomfortable knowing that the fix was not truly intended for the the defective part because they could not identify what's the cause of the stalling. I'm not satisfied with the " let's replace this and if it did not fix it, replace the next part" approach. Given the danger and unpredictability of the nature of the stalling, They better figure out what is the cause. Talked to MB case manager several times and requested to replace more sensors. I still don't see where this issue is going. Looks like I have no choice but to get the GL back and hope it won't happen on the freeways.
It's pushing 2 weeks now and my 2015 GL550 still at the shop. Dealer said MB agreed to replace ECU. I asked if the fault code now shows ECU was acting up. They said no fault codes showing ECU has problem. But they will replace it anyway since that is the brain of the car. I told them ECU also relies on many other sensors and modules in the vehicle. I felt uncomfortable knowing that the fix was not truly intended for the the defective part because they could not identify what's the cause of the stalling. I'm not satisfied with the " let's replace this and if it did not fix it, replace the next part" approach. Given the danger and unpredictability of the nature of the stalling, They better figure out what is the cause. Talked to MB case manager several times and requested to replace more sensors. I still don't see where this issue is going. Looks like I have no choice but to get the GL back and hope it won't happen on the freeways.
I would ask the dealership to write a formal letter stating that they believe the car is safe for driving and they be responsible for future problems related to their inability to diagnostic the problem for it to happen again or the consequences thereof.
