This Problem Across All Years
Vehicle has issues maintaining power and attempts to stall in traffic. It also shakes violently at idle. It was diagnosed by the dealership and determined that the cylinder head was damaged and needed to be replaced for $7200.00 since there was no warranty. Vehicle was purchased used and the Issue was noticed 6 months after purchase at 70-80 thousand miles. After researching the issue, this appears to be a known problem with the 4 cylinder Mercedes vehicles, but only specific models were covered under the extended warranty for replacement.
Vehicle has issues maintaining power and attempts to stall in traffic. It also shakes violently at idle. It was diagnosed by the dealership and determined that the cylinder head was damaged and needed to be replaced for $7200.00 since there was no warranty. Vehicle was purchased used and the Issue was noticed 6 months after purchase at 70-80 thousand miles. After researching the issue, this appears to be a known problem with the 4 cylinder Mercedes vehicles, but only specific models were covered under the extended warranty for replacement.
Nov. 7, 2025 - After returning home around 4pm, I parked the car in my garage, and entered my home. Due to the sound of the fan motor which stays on after you shut off the car, it is possible that the engine was still running when I thought it was off. Please note that my garage is attached to my home. Around 1am I awoke and went into the bedroom on the far side of my home which sits directly above my garage. When I entered this room I heard a noise, like some kind of motor but at the time I had no idea what this was. As I walked through my home, went downstairs and neared the doorway to my garage when I realized the loud noise was coming from my garage. It was not only frightening but extremely concerning and come to find out my Mercedes was running, in fact it had been running since I got home earlier in the afternoon. Please note that one of the most critical things that happened is that upon opening the door to the garage I was exposed to severe carbon monoxide fumes. I discovered the car sitting there, running, for no reason at all, the outside was very hot to the touch and I panicked. I was breathing in fumes that could affect my life! I ran to the kitchen, grabbed a fan, opened the garage doors and immediately went upstairs to see if my daughter was okay. As you know carbon monoxide can kill you and I did not know why in HECK this was happening. - This car is still relatively new with low miles. - This vehicle is also supposed to be equipped with significant safety features and it is difficult to exit the car without alarms sounding and appearing on the dash telling you the car is still on. - Mercedes, however, already made me take this car in twice to address multiple recalls affecting safety! I also had it serviced not less than 3 weeks ago. - Mercedes is completely skirting/ignoring the critical issues with this vehicle and has sent me a FORM letter denying assistance. There could have been 2 fatalities and I have been ill since this happened.
Nov. 7, 2025 - After returning home around 4pm, I parked the car in my garage, and entered my home. Due to the sound of the fan motor which stays on after you shut off the car, it is possible that the engine was still running when I thought it was off. Please note that my garage is attached to my home. Around 1am I awoke and went into the bedroom on the far side of my home which sits directly above my garage. When I entered this room I heard a noise, like some kind of motor but at the time I had no idea what this was. As I walked through my home, went downstairs and neared the doorway to my garage when I realized the loud noise was coming from my garage. It was not only frightening but extremely concerning and come to find out my Mercedes was running, in fact it had been running since I got home earlier in the afternoon. Please note that one of the most critical things that happened is that upon opening the door to the garage I was exposed to severe carbon monoxide fumes. I discovered the car sitting there, running, for no reason at all, the outside was very hot to the touch and I panicked. I was breathing in fumes that could affect my life! I ran to the kitchen, grabbed a fan, opened the garage doors and immediately went upstairs to see if my daughter was okay. As you know carbon monoxide can kill you and I did not know why in HECK this was happening. - This car is still relatively new with low miles. - This vehicle is also supposed to be equipped with significant safety features and it is difficult to exit the car without alarms sounding and appearing on the dash telling you the car is still on. - Mercedes, however, already made me take this car in twice to address multiple recalls affecting safety! I also had it serviced not less than 3 weeks ago. - Mercedes is completely skirting/ignoring the critical issues with this vehicle and has sent me a FORM letter denying assistance. There could have been 2 fatalities and I have been ill since this happened.
On March 30, 2023, my 2022 AMG GLE 53 check engine warning light came on. I immediately called Capitaleurocars the Mercedes Benz dealer. On May 1, 2023, according to the Capitaleurocars service order, the technician noted the following: "found the check engine light on" then performed "a guided test for fault code (P146264) and found fuel pressure and temp sensor passing test." The technician wrote "Checked PTSS cases and checked for related LI documents. Found LI-47.50-p-070263 which states that software is under development for this issue. no software available at this time. Cleared code and released back to customer." Capitaleurocars service department could not tell me when the software update would be issued, but I would be notified as soon as it was released. I was also told that on September 6, 2022, a temperature sensor was replaced on the vehicle due to the check engine warning light being on. I asked if the issue on September 6, 2022, was the same issue I was having and I was told yes, it was the same fault code. So, approximately a month before I purchased the car on October 1, 2022, the check engine warning light was on and a temperature sensor was replaced. The Capitaleurocars service department suggested I call MBUSA Customer Service to get more information about the software update. I researched the LI document number and found that NHTSA had received a complaint on 06/25.2020, with same the LI 47.50-p-070263 document number and fault code P146264. The complaint to NHTSA was on a GLE and noted as follows: Complaint: Check engine light active and FC P146264 Temp. and pressure sensor B4/7 is stored in engine control unit and tank control unit. Cause: Software parameter in Fuel pump control unit Remedy: Update SW in FSCU control unit Capitaleurocars Service Department did confirmed that the fault code found on my car on May 1, 2023, was the same as the one reported to NHTSA on 06/25/2020.
On March 30, 2023, my 2022 AMG GLE 53 check engine warning light came on. I immediately called Capitaleurocars the Mercedes Benz dealer. On May 1, 2023, according to the Capitaleurocars service order, the technician noted the following: "found the check engine light on" then performed "a guided test for fault code (P146264) and found fuel pressure and temp sensor passing test." The technician wrote "Checked PTSS cases and checked for related LI documents. Found LI-47.50-p-070263 which states that software is under development for this issue. no software available at this time. Cleared code and released back to customer." Capitaleurocars service department could not tell me when the software update would be issued, but I would be notified as soon as it was released. I was also told that on September 6, 2022, a temperature sensor was replaced on the vehicle due to the check engine warning light being on. I asked if the issue on September 6, 2022, was the same issue I was having and I was told yes, it was the same fault code. So, approximately a month before I purchased the car on October 1, 2022, the check engine warning light was on and a temperature sensor was replaced. The Capitaleurocars service department suggested I call MBUSA Customer Service to get more information about the software update. I researched the LI document number and found that NHTSA had received a complaint on 06/25.2020, with same the LI 47.50-p-070263 document number and fault code P146264. The complaint to NHTSA was on a GLE and noted as follows: Complaint: Check engine light active and FC P146264 Temp. and pressure sensor B4/7 is stored in engine control unit and tank control unit. Cause: Software parameter in Fuel pump control unit Remedy: Update SW in FSCU control unit Capitaleurocars Service Department did confirmed that the fault code found on my car on May 1, 2023, was the same as the one reported to NHTSA on 06/25/2020.
Radiator failed after driving on the highway. Radiator failed due to an item passing through the grille in the normal course of driving causing coolant to leak from car. Low coolant warning light indicated that coolant was low. Car was inspected by dealer who determined that an external influence(road debris or a small rock) passed through the front car grille and striked the radiator causing the radiator failure. Manufacturer was notified of the incident regarding the radiator failure.
Radiator failed after driving on the highway. Radiator failed due to an item passing through the grille in the normal course of driving causing coolant to leak from car. Low coolant warning light indicated that coolant was low. Car was inspected by dealer who determined that an external influence(road debris or a small rock) passed through the front car grille and striked the radiator causing the radiator failure. Manufacturer was notified of the incident regarding the radiator failure.
1. 48 volt battery electrical system malfunctioned. car shut down on the road while driving. 2. could have been rear ended if on highway and there was no shoulder 3. dealer had car for a week and serviced electrical components and updated software. 4. no police. vehicle serviced ny manufacturer 5. eceived many warning notices when it happened - 48 volt battery , coolant too hot, engine overheating, etc. no prior warnings. first occurrence 1/4/2023, second occurrence 2/21/2023 issue reocurred
1. 48 volt battery electrical system malfunctioned. car shut down on the road while driving. 2. could have been rear ended if on highway and there was no shoulder 3. dealer had car for a week and serviced electrical components and updated software. 4. no police. vehicle serviced ny manufacturer 5. eceived many warning notices when it happened - 48 volt battery , coolant too hot, engine overheating, etc. no prior warnings. first occurrence 1/4/2023, second occurrence 2/21/2023 issue reocurred