Q: Distronic plus, parktronic inoperative, pre-safe limited, ECS off during driving.

asked by on April 18, 2017

After getting an ECU tune from Eurocharged, and done service B3 on last Friday, I drove all the way to vegas without any issue. However, I was driving on my way back to LA from vegas using the distronic plus cruise last night, suddenly I felt a stun of the car and the screen showed distronic plus inoperative, parktronic inoperative, pre-safe limited ECS off and completely lost throttle. Had to pull over and restart the engine then everything looked fine except the engine light. Later, the car was feeling slow and the RPM won't go over 4k. It happened again about 30 minutes later. I was lucky that no car was behind me since it's almost midnight but I felt very unsafe. I am a new owner of this CPO 2012 cls63. The mileage is around 31500 miles now. I am not sure if it's caused by the ECU tune.

My car has 31500 miles.
My car has an automatic transmission.

Hello, thank you for writing in. There are two possibilities that are most likely at this point. Either the run-up caused the issue, or an underlying issue caused the need for a tune-up. The best place to start is to have the vehicle scanned for diagnostic troubleshooting codes. These will give you a list of all problems found by the vehicle’s computer, and help narrow down possibile issues to a particular system or component. With the age of the vehicle, you should not be experiencing any critical flaws at this point. The ECU may be faulty to begin with. Only further testing will tell. For more help with diagnostics, contact our service department to schedule an appointment.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Warning lights come on while backing down a hill, Infiniti G25

There is a short somewhere causing the lights to work intermittently. However, to provide more insight as to where the short might be, I would need to know exactly which lights are illuminating intermittently. I'm guessing that it is not...

I have a 2010 Merceds Benz C300, the headlight will turn off for a few seconds then come back on while I'm driving. what can it be

Hi Thomas. Thanks for sending your question today. Typically, this type of issue is caused by a loose headlight electrical harness or an electrical short somewhere from the light switch to the headlight itself. The best way to determine the...

Engine revving when going over 30 mph. Problem with the 3rd gear?

Hey there. It sounds like your clutch may be worn to the point of slipping. The engine revving but the vehicle speed not matching in 3rd gear is typically an early indication of the clutch being worn. When the clutch/pressure...

Related articles

A Buyer’s Guide to the 2012 Volkswagen Golf
The The 2012 Volkswagen Golf offers comfort and an elegant design for a variety of transportation needs. The Golf is a solid vehicle, good size, and great value, especially when it comes to comparing prices of similar vehicles. Key Features...
P2517 OBD-II Trouble Code: A/C Refrigerant Press Sensor B Circuit Low
P2517 code means the A/C refrigerant pressure sensor is out of the normal refrigerant level range, a faulty switch, wiring, or connectors.
P2794 OBD-II Trouble Code: Gear Shift Direction Circuit Low
P2794 means there is a problem with a gear shift or lever direction or position due to a worn transmission, an electrical issue or a bad sensor.