clk220cdii

So basically I was driving back from somewhere and parked up to go the shop and when I came back I couldn't get the car to start. after a couple minutes I thought it might be immobiliser or something so I tried again, locked the car and then unlocked it and it actually started. But the ESP not available came up and then it was just stuck in P.

I kinda panicked and called my brother who was local to come down as he had break down cover but once he arrived the car eventually went into drive and I was able to make it back home albeit couldn't go above 30mph, my guess it went into some limp mode or something.

The next day I thought I would take it to the garage, which proved tough because it wouldn't shift down to drive at all, but again managed to put it into drive. At that point I realised on the dash that the P and C indicating the comfort and gear level was flashing continuously. So I went to the nearest garage that had a diagnostic machine to read out the issue/s.

Most if not all got cleared out apart from the following:


2211 - No or incorrect CAN message from control unit N15/3 (ETC Control Module Timeout (ID218)

2210 - No or incorrect CAN message from control unit N15/5 (electrical selector lever module control module) Timeout (ID230)

2209 - No or incorrect CAN message from control unit N47 - 5 (ESP and BAS control module) Timeout (ID200 bzw ID208 bzw Id300)

and also

P2310 CAN Communication and Traction system faulty



After clearing all the faults, the above 4 remained.

I took it to another garage which had the star machine (I believe) but unfortunately they forgot to do the printout but mentioned that the ESP module could be faulty (which can be very costly). Another different garage said it could be the actual gearbox.

Now, I've done a bit research in this very short time, and found that the there could be numerous factors for this ESP problem. The more common fixes are either the brake light switch, ABS wheel sensor, wheel speed sensor, steering angle sensor.

As of right now, the P and C is flashing on the dash, and it is stuck on P, the engine management light is not there any more, however, that's bound to come back. Also car doesn't go above 30mph. Side note, my right brake lamp is faulty which happened in the morning yesterday before all of this.



Anyone care to shed any light on this?

Many thanks for reading

EDIT

Also the garage that said ESP module could be faulty didn't really check the sensors, but it seemed like a quick diagnostic.

As of today

Firstly couldn't get to a Mercedes specialist because I wasn't comfortable driving the car in this state and also because it's in limp mode.

Now I have a local garage who first diagnosed the problems take a further look at the car today. The started to get all kinds of problems, engine is now misfiring, and there is a very rough idle.

He explained that he check the wiring and there doesn't seem to be any issues there, he checked the front sam and a whole lot of other things, and came to the conclusion, that injector 2 has failed, the starter motor is probably giving issues and the main thing, the gearbox control unit.

Now repairing all of that is looking to be around £1500 or more. I was told the Gearbox control unit itself would cost around £1100 + VAT. All this started from the damn ESP.

He changed the brake light switch and sorted the wiring etc and the car now shifts to gear without any issues, but it 'jumps' when you change from neutral to drive and vice versa which in his words points to the gearbox control unit. Mind you the flashing of the P and C on the dash remains along with the engine management sign.

So now, I'm not sure what to do, I could do with some help.

Rudeney

First, check the battery voltage. Low or erratic voltage can cause all sorts of gremlins. You should have 12.6v at rest, no less than 11v during cranking, and 14v at idle.

DanielFD

Sounds like water in a communication module, maybe the front SAM, or rear SAM. I'd visually inspect those, as they can cause all sorts of problems. Also like Rodeney said, the battery here is the main suspect before anything else, check your voltages.

clk220cdii

Thanks for the suggestions guys, at the moment I can't check it as it's in the garage.

But I do remember checking the voltages and they seemed on par to what you have mentioned. But will notify them to check again.

Will water in the Front/Rear SAM cause the gearbox or engine misfire issue?

As I mentioned before, the P and C blink in the instrument cluster continuously even after changing the brake light switch. Most important thing is, I don't want to get ripped off and spend more than £1500 to get it repaired when it could be something way way less.

clk220cdii

Could the MAF sensor be the cause of the engine misfire and or gearbox jerk issue? and what code should I look out for?

Every garage remotely closest to me doesn't have a star, they either have a snap on or launch.

DanielFD

yes water damage can cause all sorts of weird problems. In your case when problems keep poping up that seem unrelated it usually is water damage. The front SAM/Rear SAM is the only part that connects all these different unrelated parts.

Rudeney

Water in the engine bay electrical compartment can damage both the front SAM and the ECU.