Hello everyone! I've been surfing around this forum for advice for some time now. I wanted to reach out for help. I bought a 2002 ML320, and it came with all the bells and whistles. No really, almost every single light was flashing and chiming and dinging. The guy I bought it from said the battery went dead, and when it got jump started, it went into limp mode and a bunch of lights started flashing. Brakes are also going to the floor. His son also added an aftermarket stereo and cut the harness for the nav/stereo. He didn't want to deal with it, so he sold it. On a prayer, I replaced the conductor plate and reset the codes. No joy. I'm wondering if you have any recommendations before I limp it into pick and pull. I borrowed a "STAR" system, so thats where the codes below came from. I also attempted to delete all the codes and rescan. I still see "Stored" codes, so not sure what's going on there.

Lights on: BAS ESP, ETS
Lights flashing: ABS, circle just to the right of ABS, Brake

ETC
P2300: CAN communication with other control units in this vehicle is not possible
P2310: One or more messages from control unit N47 are not available on CAN bus
P2314: One or more messages from control unit N73 are not available on CAN bus
P2311: One or more messages from the engine control unit are not available on the CAN bus --Stored Only--

ESM
P1875: CAN communication with other control units installed in this vehicle is not possible --Stored Only--
P1876: The signals sent by control unit N47 for the wheel speeds and the braking torque are not available on the CAN bus

ESP
C1020: CAN connection of control unit ESP or CAN star point: fault in communication
C1042-001: Fault in CAN communication with component Variable steering ratio
C1022: Fault in CAN communication with control unit N3/10 (ME-SFI [ME] control unit)
C1024: Fault in CAN communication with control unit ETC
C1030: Fault in CAN communication with control unit N78 (Transfer case control module)
C1140-008: Component N49 (Steering angle sensor) is not initialized
C1200: S9/1 (Stop lamp switch): Plausibility --Stored Only--
C1012: ESP control unit terminal 87 overvoltage --Stored Only--

BAS
C1012: Voltage supply circuit 87: Overvoltage --Stored Only--
C1025-001: CAN communication with the traction system is faulty --Stored Only--

LCP
B1213-008: Exterior rearview mirrors Left: Vertical adjustment signal faulty
B1213-009: Exterior rearview mirrors Left: Horizontal adjustment signal faulty

ICM
B1040: Fault in CAN communication with control unit MR engine control --Stored Only--
B1041: Fault in CAN communication with control unit Traction systems --Stored Only--
B1043: Fault in CAN communication with control unit BAS Brake assist --Stored Only--

 

Kudos to you for posting the codes and where they were stored.

With the key out of the ignition, and with the eng. cold, check the voltage at the Pos. & Neg. lugs, then do the same, testing the vol. at the clamps.

If you need a battery, the part # is 000 982 33 08, approx.$177.

 

Appreciate the reply.

Just replaced the battery. Got a Duracell gold. Hopefully that's not causing issues (non OEM)

Battery with vehicle on: 13.7 volts
Battery with vehicle off: 12.63 volts
Positive terminal to ground: 12.62 volts
Positive cable to ground: 12.62 volts
Negative cable to ground: good continuity
Positive cable to lugs: good continuity
Positive lug to fuse block: good continuity

I would also mention that some modules didn't scan through DAS (exclamation point). Specifically Trans and a couple others. I'll get HHTWIN running to scan those today. I also checked all fuses under the hood. None blown. I'll check the interior ones today. Any next steps recommended?

 

You must delete all of those codes and see which ones *** back.

 

I did. They all came back.

 

I found this connector unplugged under the dash. Looked like 3 wires were cut and loose. Others had splices in them. Didn't look like something the factory would do. Any possibility this could have anything to do with the nonsense I'm seeing?

 

Look at that component with a bright light for the part #. It will start with Axxx xxx xx xx.

I believe that is the EAM.

Please update your profile to include the year, model (is it GAS, CDI or Blue) and where you live.

 

Could be an entertaining project, but it might well be cheaper to buy a new GLS500 than fix it...

 

1. You seem to have a major electrical fault in the car.
2. I would get the car reviewed by a professional car electrical diagnosis shop
3. I had something similar happen to my ML320, and the diagnosis was a faulty fusebox.....the fusebox metal degrades over years and builds up resistance over the years.
4. Shop replaced the fusebox and all electrical faults were gone instantly.