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Mercedes Benz E320 check engine light comes on

53 of the 1,164 owner complaints about the Mercedes Benz E320 describe check engine light, most of them for the 2005 model year.

owner complaints
53
worst model year
2005
typical repair cost reported
$3,000
typical mileage
88,700
Is there a fix? No recall or service bulletin covers this area of the car yet.

By model year

What owners say

Filed Dec 14, 2022 · Engine · AZ

The contact owns a 2008 Mercedes Benz E320. The contact stated that the check engine warning light was illuminated. The contact took the vehicle to the dealer who confirmed engine failure. The contact was informed of the federal safety agency Campaign Number: 08V006000 (Engine and Engine Cooling) however, the VIN was not included. The vehicle had not been repaired. The manufacturer was made aware of the failure and confirmed that the VIN was not included. The failure mileage was unknown.

Filed Jul 17, 2020 · Fuel system · 120,000 miles · CA

When my windows are down and im driving you can smell gasoline very strongly in the car. Even worse in the back seat area. Especially if my gas tank is filled. Im constantly getting a warning to check the gas cap and the gas light goes off flashing then my check engine light will go on.

Filed Jul 1, 2019 · Brakes, Driver assistance · GA

Check engine light goes on and off for days at a time . Brake lights on dash stay on all the time ABS will also come on while driving and my car will stop . I have to force the car into park ... Pump my brakes the breaks make a sound and then they start working again .... There is a humming noice when I start my car as well as the seat belt light goes on and off even with my seals belt on.

Filed Feb 5, 2018 · Electrical · 195,100 miles · CA

The car is being hacked into by multiple individuals across triple cities. The hackers are able to lock and unlock the doors, shift gears, turn on the check engine light, control the radio and cd player, open the hood to steal oil and control the complete functionality of the car. Including turning on the cabin lights, blacking out the odometer along with the fuel gauge, and shutting the car off when desired this includes in the middle of the street. Because they can unlock the doors and roll down the windows they have access to the hood and gas door. This allowed them to break the radiator, damage the catalytic converter, and steal gas. Also since the hackers have access they have destroyed the drivers seat, crack the wood on the steering wheel and door trim, removed the right and left front doors, and destroyed the center arm rest. The rf field is controlled by them, and loud cracking sounds are remotely introduced when the car is stationary and key removed. The tele- aid is also activities remotely on occasion as well. The fbi has been notified numerous times to no avail along with the car maker who told me not to contact them again. Three dealerships checked out the car and none knew how to deal with the issue. Mercedes benz in germany was notified by emai and said mercedes USA has my information I'm their legal department. This was over 2 years ago with no contact from them regarding this issue. All attempts to reach them by phone via customer service has failed. Multiple police reports have been made with several police departments.

Filed Feb 22, 2016 · Electrical · 88,700 miles · TN

Bought used one owner car w/88,500 miles in july 2015. After driving only 200 miles check engine light came on, engine would turn over but not start, it was towed to repair shop. Codes read crankshaft sensor, generator. Mechanic replaced crankshaft sensor and repaired wire to it. Did not replace alternator. Called and advised car was ready for pickup. Picked up car and drove less than 2 miles and check engine light came on again. Took back to mechanic who removed codes. Drove another 5 miles and check engine light came on again. He didn't answer phone, drove home in limp mode where it sat for over a month when another mechanic was willing to tackle job. He put on new alternator and drive belt. Crankshaft sensor was bad again and he replaced it. Car would not start. Towed to mb in franklin, tn who said ECM/ ecu module bad. Replaced it and then said batteries bad, and alternator bad. They replaced batteries but local mechanic told them alternator was working fine when it was put in car. Car towed back to local mechanic who checked and said alternator was indeed bad now and he replaced it with one he checked out again before installing. Now the alternator was not being allowed to charge the system and is being towed back to mb in franklin, tn. After searching the internet I found that mb has been installing defective wiring harnesses in their cars since the 1990's and they know it but will only replace the defective harness to those to yell the loudest because there are supposedly millions on cars on the road just waiting to short out expensive parts and cause owners costly repairs. I am yelling at the top of my voice for you to go after them with a vengeance and make them do the repairs. I have spent over $4000. Already on this car which should have been fixed by them at their expense. The covering on the wires gets brittle and shorts out various..

Filed Jul 24, 2015 · Brakes, Engine · CA

Tl* the contact owns a 1998 mercedes benz e320. While driving 30 MPH, the contact was informed by another motorist that the rear driver side tail light was not working. The contact also stated that the braking power diminished and required a lot more pressure to stop the vehicle. The contact also stated that the check engine indicator would illuminate intermittently. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failures. The failure mileage was unknown.

Filed Jun 16, 2015 · Fuel system · CA

The check engine light has been coming on since 2008 and the fuel gauge does not show the correct about of fuel since 2009. Repairs were done but the problems was never completely fixed. Now the car is being hacked into across multiple locations by several different individuals. Besides taking control over the ,vehicle functionality, tele-aid, cd player, brakes, lock and unlock the doors at will, and the increase rf in the car, the hacker can turn on and off the check engine light and control the fuel gauge. Mercedes benz USA was contacted regarding the problem and I was told to never contact them again. They also said an attorney would send me a letter stating their position. It has been almost two years, and I have yet to receive it. The first letter I sent to the company regarding this matter was sent directly to [xxx] cannon the ceo of the USA branch. The second letter was sent to [xxx]. Chairman of the board of management at daimler ag and the head of mercedes benz cars in germany. A representative from [xxx]. Office said this problem is the responsibility of mercedes benz USA and the matter is in the legal department of mercedes benz USA. I have tried to contact mercedes benz USA after the response from germany and was told not to contact them again regarding my car. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Oct 27, 2014 · Fuel system · 85,500 miles · AZ

On thursday october 23, 2014, I took my 2004 e320 sedan to schumacher mercedes benz in scottsdale arizona. I asked them to check out a 'check engine' light and informed them that there was an occasional strong odor of gasoline. On friday october 24, 2014, the dealership called to inform me that the gas tank and sensors needed to be replaced because of a leak. My service coordinator also told me that it is a common / known problem with the make and model of my vehicle. The cost to repair it would be $4000 + I contacted the federal safety agency website and learned that there is an open investigation and a complaint opened march 15, 2013 ,,, however there has been no recall issued as of this time. The car has not yet been repaired. On october 24th, I took it to a repair shop who works exclusively on mercedes benz vehicles, for a second opinion / evaluation.

Filed Oct 27, 2014 · Engine, Transmission · 65,000 miles · TX

Tl* the contact owns a 2007 mercedes benz e230. The contact stated that when attempting to accelerate, the vehicle failed to shift from first gear and the check engine warning light illuminated. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 65,000.

Filed Sep 10, 2014 · Brakes, Fuel system · 140,000 miles · VA

I'm lucky to be alive! I purchased this car in 2005 and ever since I purchased my 2003 merc. Benz e320, it's been a crazy ride! Here's a list of different issues that happened to me over the course of me owning this vehicle, which unfortunately I still do. I was driving with my little girl in tow and my brakes went out on me several times, my battery dies constantly, I had an issue when after I pumped gas you could smell fuel both inside my car & outside of my car, I literally one time had fuel pouring from the back of my car that ended on my garage floor. (thank god I don't smoke!) my suspension is constantly rattling, I have water that leaks on my feet when I drive occasionally and sometimes I have heat in the winter and sometimes I don't. I always have a check engine light on and as soon as I fix one, another one comes on. I currently had issues with code po134, po135 and had the o2 sensor changed, then my check engine light came back on and now I have codes po171 & po174 that I have no idea how to get fixed because it could be a number of issues. My battery drains when my electric seats are plugged in and so I have to have them unplugged to save my battery. Did I mention my back tire blew out on interstate 95 and I almost lost control of my car. It's devastating to pay the amount of money you do for this particular model, it's pretty on the outside and is a mess under the hood! Is it normal when you have the AC on for it to sound like an airplane ready for take off? I'm tired of investing all kinds of money into this car, I just can't take it anymore! I can't even pass my va. State emissions test because of all these error codes (check engine light and malfunctions) and the state doesn't even find my car worthy of being on the roads.

Related recalls

No recalls on record for this model year.

Questions about the Mercedes Benz E320 check engine light

Why does the check engine light come on in the Mercedes Benz E320?

Owners who report it most often also describe gas smell in the cabin, wrong fuel gauge reading and engine stalls while driving.

Which Mercedes Benz E320 years have check engine light problems?

The model years with the most reports are 2005 (13 complaints), 1995 (11 complaints) and 2003 (10 complaints).

How much does it cost to fix check engine light on the Mercedes Benz E320?

Owners who mentioned a price put the repair at about $3,000 (median of 9 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.

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