Mercedes-Benz GLA 250 check engine light comes on

Filed Oct 10, 2026 · Engine · NJ

Time chain problem. Dealer removed the engine light fuse so they hide the problem

Filed Sep 8, 2026 · Electrical, Engine · CA

I am writing to formally submit an urgent safety escalation and Lemon Law notice regarding my 2026 GLA 250, purchased brand new on February 26, 2026, as a replacement vehicle following the severe operational disruptions associated with the EQB 300 recall. As a parent of a family member with a disability, reliable and secure transportation is an absolute necessity. I selected the Mercedes-Benz brand based on its reputation for engineering integrity and safety. Regrettably, the vehicle delivered has proven to be mechanically hazardous and operationally compromised. Since taking delivery, the vehicle has experienced the following recurring, catastrophic failures: • Multiple recurrent check engine warnings. • Three separate instances of complete failure to shift while actively operating in traffic. • Four complete starting failures accompanied by a permanent black screen. • Two total blackouts of the entire instrument cluster, odometers, and operational systems while in motion, with the most recent occurrence taking place on September 4, 2026.

Filed Aug 28, 2026 · MI

My 2016 Mercedes-Benz CLA 250 (VIN: [XXX]) has a check engine light for code P052E, which points to a broken crankcase ventilation valve. My car has only 59,000 miles on it, but this same exact part already broke once before and was replaced under the original warranty. Now, the replacement part has failed too. This proves the part is defective and keeps breaking. Mercedes-Benz already knows this part is defective. They gave a free 15-year or 150,000-mile extended warranty to fix this exact issue for free on the C-Class and other longitudinal M274 engine platforms. However, they are actively denying coverage for my CLA 250's M270 engine variant, despite the two vehicles sharing nearly identical engine blocks, matching subcomponents, and the exact same broken part. Because of this unfair engine code technicality, Mercedes-Benz is forcing CLA owners to pay thousands of dollars out of pocket for a recurring problem they fix for free on a C-Class. I urge the federal safety agency to look into this engine loophole and force Mercedes-Benz to include the M270 engine variants under the 15-year/150,000-mile free repair program. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 15, 2026 · Engine, Fuel system · FL

I am reporting a severe drivability and engine failure issue with my vehicle. The vehicle has been exclusively maintained by authorized Mercedes-Benz service centers. Immediately following a scheduled 60,000-mile (Schedule B/C) maintenance, the Check Engine Light began cycling on and off. The vehicle simultaneously developed severe drivability symptoms: the engine ran extremely rough, and acceleration became erratic and "jumpy." This unpredictable power delivery and hesitation poses a significant safety hazard when accelerating or merging in traffic. I immediately returned the vehicle to the service center to report the issue. The dealership has now retained my vehicle for over 20 days and diagnosed that the cylinder head requires complete replacement. Despite this catastrophic failure occurring immediately after their maintenance procedures, the dealership is holding me financially responsible for the repair costs because the vehicle is past the 4-year/50,000-mile warranty. My vehicle remains immobilized at the dealership."

Filed Jun 22, 2026 · Engine, Fuel system · RI

I am filing a complaint regarding my 2018 Mercedes-Benz GLA 250. My vehicle recently triggered a check engine light and was diagnosed by an independent mechanic with code P052E, related to the positive crankcase ventilation regulator valve / crankcase ventilation system. My mechanic advised that this issue appears to be similar to a known Mercedes-Benz issue affecting other model years and/or related Mercedes models. Mercedes-Benz has issued an emissions extended warranty/service coverage for a similar crankcase ventilation / intake line assembly issue on other vehicles, including fault code P052E71. However, my vehicle does not appear to be included despite having the same or very similar failure code and system issue. I am concerned that this may be a broader defect affecting additional Mercedes vehicles beyond the models currently covered. The issue involves the crankcase ventilation/PCV system and may require repair of related intake line, valve cover, oil separator, or ventilation valve components. I believe this should be reviewed because owners of vehicles with the same failure pattern may be responsible for costly repairs even though the issue appears similar to one Mercedes has already acknowledged on other models. I am requesting that the federal safety agency review whether 2018 Mercedes-Benz GLA 250 vehicles should be included in any related recall, defect investigation, emissions warranty extension, or service campaign related to code P052E / P052E71 and the crankcase ventilation regulator valve system.

Filed May 30, 2026 · Driver assistance, Electrical · NV

The vehicle experienced a sudden, total communication network crash on [XXX] the vehicle simultaneously triggered cascading critical safety system faults including “ inoperable” messages for the SOS system, Supplemental Restraint System ( SRS) and antilock brake system(ABS) along with check engine light on dashboard. The car locked itself in park and completely refuses to engage any drive gears. I took it to the dealer in Henderson, NV and they reported to me on Dec 24, 2025 that it will be a $1200 diagnostic and the repairs can be thousands of dollars. Since then I have taken it to 5 European and independent shops and have spent thousands of dollars for guess work. This happens sporadically I have been broken down where tow trucks have to retrieve my car and take to a shop where they have no clue of the issue. I am scared to drive it if it stalls on the streets and have a major accident. No problem has been resolved INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 20, 2026 · Engine · CT

I own a 2022 Mercedes Benz GLA 250 2022. in [XXX], it was pouring rain and I was driving from [XXX] to attain [XXX] to drive home. It was pouring that night and driving conditions were horrible. I was in the middle lane driving roughly 55-65 mph. about 15 minutes into my drive a light on dash came " engine chip malfunction" and the car died. I couldn't do anything and I tried to coast to the shoulder as best as I could. Driving on [XXX] is dangerous enough, nevermind having an engine failure. I placed my emergency light on and coasted to the emergency shoulder to the right of me. The engine failed. I couldn't do anything. I turned off and called Mercedes of Danbury CT. I told that I was in trouble and explained what just had happened. I was in the car. The young said she never of something of the sort. I mentioned to her that I had an appoint to have the transmission fluid and I want them to look into this immediately. I waited on the shoulder for 15 minutes and turned the car back. The engine light failure was gone. I slowly merged into the right with my emergency lights and people actually moved over to let me back in. I had about 40 minute drive. The irony of that call with with danbury, they offered no assistance at that moment of despair. They had no idea how scared I was, not to mention the car dying gain. I was able to get home and pull into the garage. The car did not repeat that incident again. The next morning, I drove to work and back, no issues. that went on until I brought it in on 12/15 for a transmission fluid oil change. I spoke to the concierge at the dealer and repeated to them to look at the car for this engine chip malfunction. He told me not worry, all will be taken of. I called later that same and asked them about the vehicle and status (it was 3:15 in the afternoon, I dropped the car off at 7:30). I arrived at 5 and nothing was done. I waited another hour. Please attached. so much has happened. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (F

Filed Jan 2, 2026 · Transmission · 39,000 miles · MA

The contact owns a 2019 Mercedes-Benz GLA 250. The contact stated that while driving at an undisclosed speed, the transmission inadvertently shifted to neutral(N), causing a loss of drive power. The check engine warning light was illuminated, and the message "See Dealer" was displayed. The vehicle was restarted and driven to the residence. The vehicle was not yet diagnosed or repaired by an independent mechanic or dealer. The contact related the failure to the federal safety agency Campaign Number: 21V033000 (Power Train); however, the VIN was not included in the recall. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 39,000.

Filed Dec 18, 2025 · Electrical, Lights · AL

My vehicle has been taken to the Mercedes dealership multiple times from 2/24/25 -12/14/25 (10 Mths) for the following issues and still no resolution to the problem. Each time they say they've fixed the issues we get the car home and end up bringing it back a couple days later for the exact same issue. The issues being the Instrument Cluster/Panel failure (check engine light, multiple warning lights on display while driving, dash display is blacking out and unresponsive). The speedometer, fuel amount and mileage is also blacked out and unresponsive. The headlights, and tail lights also go off and are unresponsive while driving. We've also experienced the vehicle not going in reverse or drive and had to return it multiple times for this as well. These incidents are very serious safety hazards to the driver of the vehicle, other drivers and pedestrians. On several occasions we've addressed these problems with the dealership and still no resolve. However, we are paying very expensive labor fees only to return it with the same problems repeatedly and no explanation as to why the problem keeps recurring. We have receipts, photos and videos of this problem because the dealership kept stating they weren't seeing the issues we were seeing. However, after we presented the evidence and confirmation we have, they stated that they would conduct a diagnostic test and take a look, but the issues still have not been resolved after several times picking it up after they stated that they had changed the instrumental cluster. The last time after we returned it they discovered they had put the wrong part in the vehicle, however the same issues occurred with that part as well which is the reason we returned it to be looked at again. They changed it and still the same issue has repeated again. This is concerning and alarming that we were trusting them to work on the vehicle and driving the vehicle home thinking it is fixed and then discovering that they had put a wrong part in the car.

Filed Dec 8, 2025 · Transmission · UT

I was driving my vehicle and it shifted into neutral and would not go back into gear until I pulled over to side of the road, turned it off and back on. A check engine light came on when I restarted the vehicle and I took the vehicle to the dealership for diagnosis. They told me they couldn't find an issue and reset the check engine light. A week later, I was driving on the freeway and it shifted into neutral again at 70 miles an hour. Luckily, I was in the right hand lane and was able to coast to the side. At that point I started looking online to see if others had this issue and came across this: Campaign No. : 2021020038 the federal safety agency ID: 21V033 Campaign Desc. : Replace Transmission Control Unit 21P5495403 Which is exactly what is happening to my vehicle