Book Mercedes-Benz check engine light at our Haines City shop. Same technicians, same bays, every time you come in.
31600 U.S. 27, Haines City, FL 33844
Monday to Friday, 7:30 AM to 5:30 PM
A code is a starting point, not an answer. When that light comes on, the computer has seen a reading outside the range it expects and stored a code for it. The code names the system involved. It doesn't name the broken part. One code can have five believable causes sitting behind it, and the only honest way to tell them apart is to test.
Steady or flashing matters. A steady light means the computer wants someone to look at it, and you can usually finish your errands and get it scheduled. A flashing light means the engine is misfiring right now and unburned fuel is heading into the exhaust. If it is flashing, pull over when it is safe and have the car towed or looked at before you drive it further.
Diagnosis starts with every stored code plus the freeze frame data that came with it, so we can see what the engine was doing at the moment the light triggered. Then we watch live data with the engine running. Fuel trims show whether the computer is adding or pulling fuel to cover for something. Sensor readings get compared against what the engine is actually doing. From there our ASE certified techs test the specific suspects, which is how a failing sensor gets separated from a vacuum leak or a wiring problem instead of replacing parts in order until the light goes out.
Some codes have nothing to do with how the car drives. Evaporative emissions codes are the usual example: the car feels perfectly normal while fuel vapor quietly leaks away. Sometimes it really is a loose or worn gas cap, and we'll tell you that. Often the cap is fine and a smoke test finds the leak somewhere else in the fuel vapor system.
You leave knowing the actual cause, with inspection photos on your phone and a written quote. Whether you fix it that day is a separate decision.
The technician found a thermostat stuck open, which was the main concern behind the check engine light.
Read the full jobAfter the repairs, the oil leak was resolved, and the vehicle's oil level warning light no longer appeared.
Read the full jobJohnnies is currently the only shop I will let service my Mercedes benz c300. I take very good care of my car and I use Johnnies because they treat my car as if it were their own. Pricing is better than other places nearby, their customer service is exceptional and the lounge area is 5 star hotel quality.
Shane Wise
Verified Google Review
It is hard to know where to begin when you are overwhelmed by professionalism and finding a garage with folks that care and listen. I can verify that the other reviews commenting on the inside of the “waiting room “for lack of a better term is unlike anything I have seen before. Snacks, relaxer chairs😉, television , the shops history listed on the wall … and best of all they’re honest. I brought in a 2016 Mercedes Metris with a breaking issue. I was genuinely concerned only because we had owned the vehicle for less than two months and it could have been anything. Usually…with any MB, anything that breaks = lots and lots of money to repair! The Mercedes-Benz dealerships were quoting us anywhere from two to $300 an hour just for a look and that that much an hour for labor! 😖 Their service departments are so overwhelmed and overbooked that one of them only had one mechanic for 76 Metris’s on site that needed repair. 😖Need I say more. So I looked online and saw the reviews on Johnny’s. From the first call … it was great!!! we drove down and the gal that took care of us and checked us in was wonderful. I sent them some additional potential recalls that may or may not have been relevant to the issue with my vehicle. Had I done that to another repair shop it probably would have been completely disregarded ignored and probably deleted . However, that was not the case here. Everything I found and texted to them wad was responded to with courtesy and a “thank you”.. wow! We were treated with good old-fashioned politeness that I haven’t seen or experienced in years to be totally honest. So now let’s talk about price. The initial problem could have possibly been would a small fortune to repair at a Mercedes-Benz shop. However, the issue they found was easily and quickly repaired, and I also had them do a preventative brake flush for the system as well. To get out of a shop with a Mercedes-Benz under $300 is rate these days. But Johnnys did it. I am extremely grateful. When I thought the reviews were too good to be true well guess what they’re not. They are true. So, if you have any issues at all before you spend a small fortune at a dealership charging anywhere from two to $300 an hour go to Johnny’s first. It was definitely worth the ride from Solivita.
ann miller
Verified Google Review
Our Mercedes C280 needed the A service. Friendly staff, short wait, and reasonable price. Do recommend this shop.
Hartmut Berns
Verified Google Review
Pick whichever one is easiest to drive to.
ASE Certified Technicians
ASE certified techs working on your vehicle
Flexible Drop-Off Hours
Convenient service options
20+ Years
2 decades of trusted service
