[funes0001]

2011 GL450 128kmiles. This is happenning mostly in the mornings when car is cold. After I start the car, within 1 or 2 minutes, all error indicators in the dashboard start flashing to the point the car needs to be stopped and wont drive anymore or even put it in drive mode if it happened when was stopped. The only workaround is disconnecting the battery under the passenger seat, wait a few seconds, and reconnect it again. This may happen mostly when engine is cold.. any ideas?? I have connected a ODBC code reader and most of the alarm codes are related to CAN BUS OFF or CAN BUS SIGNAL NOT DETECTED.. hope Someone can share any experience with this issue! Thanks.

 

[StenoPete1911]

Hello. You have 4 of 6 codes in one, then 2 of 9, and then 1 of 4 codes in the last - do all of these codes disappear once your reset your main battery? I know some might be active and some might be stored codes. How old is the aux and main battery?

Any prior work done on the vehicle prior this happening?

GL.

 

[funes0001_8805]

Hi, I didn't put all codes since they are mostly repeated. But when I reset the main battery none of the codes are deleted, the only way to delete them is via Icarsoft device. Changed the Main Battery and Auxiliary batteries to NEW ones and STILL the issue persists. Nothing electrically was done on the car before, just suspension, brakes,etc. ANy IDEAS??

 

[StenoPete1911]

Hi, I didn't put all codes since they are mostly repeated. But when I reset the main battery none of the codes are deleted, the only way to delete them is via Icarsoft device. Changed the Main Battery and Auxiliary batteries to NEW ones and STILL the issue persists. Nothing electrically was done on the car before, just suspension, brakes,etc. ANy IDEAS??

Hello. Sounds like a ground issue. Since it's intermittent and resets. Eventually it will make the car inoperable.

Check your grounds and also all your modules. Front SAM, rear SAM, ECU...and so on.

GL.

 

[Deplore]

Any codes in the CGW?

 

[plinker17722]

Hi, I didn't put all codes since they are mostly repeated. But when I reset the main battery none of the codes are deleted, the only way to delete them is via Icarsoft device. Changed the Main Battery and Auxiliary batteries to NEW ones and STILL the issue persists. Nothing electrically was done on the car before, just suspension, brakes,etc. ANy IDEAS??

Welcome to the forum funes0001-8805
For having found the forum section for your car X164 .
Please make sure to Complete your Profile to show the year and model of your car next to every one of your posts.
Members are not likely to search for the one post the model of the car is mentioned.

FYI, the forum index is grouped according to chassis designation, usually a letter followed by 3 digits, and sections cover all engine versions the chassis came with.

The forum sections archives have a wealth of DIY / technical information.
When posting, you can also Search the forum archives of your chassis section via the 'Search Community' box on top..

The stickies on top of the 'Welcome' section will help to navigate the sit

 

[jrziggy]

I'm having the same trouble and wondering if there was resolution to this problem. Issue happened once, then went away for a few weeks with no issue. Now it's back and won't go away. All fuses are good, CGW looks good, batteries were bought new and installed in Jan 2020 (good quality Duracell ones). Can batteries go bad in just a couple years?

 

[StenoPete1911]

I'm having the same trouble and wondering if there was resolution to this problem. Issue happened once, then went away for a few weeks with no issue. Now it's back and won't go away. All fuses are good, CGW looks good, batteries were bought new and installed in Jan 2020 (good quality Duracell ones). Can batteries go bad in just a couple years?

Hello. OP never replied if he fixed it. With that said, what issue are you having? Any codes in the car? Batteries can go bad in couple of years, however, unlikely if you got them brand new. You still should have warranty on the battery(ies) in case you need or want to return and exchange them. As with any battery, make sure the ones you got was an AGM battery. GL.

 

[jrziggy]

Thanks, @StenoPete1911. I've got codes for days! It's funny because I have so much info that I feel like the answer is here, I just have to put all the pieces of the puzzle together.
Sorry for the long post, but here's what I see:


Errors on dash causing car to ask driver not to shift and take car to service.

Errors found using the iCarsoft MBII scanner:

ISM:

• Redundancy system for DIRET SERVICE was activated. There is a short circuit to positive.
• CAN bus malfunction. Bus off
• Communication with ESP malfunction. Message missing.
• Communication with engine control unit malfunction. Message missing.
• Communication with transmission control unit malfunction. Message missing.
• Communication with electrical ignition lock malfunction. Message missing.
• Communication with direct service lever malfunction. Message missing.
• Communication with central Gateway malfunction. Message missing.

Fuel Pump:
 No errors

Tire Pressure:

• Com with elec ignition lock malfunction.
• Com with instrument cluster malfunction.
• Fault code not in DB, C10100.
• Com with CGW malfunction.
• Com with engine control unit malfunction.
• CAN bus off.

Electric Ignition Switch (EIS):

• No CAN message received from A80 (Intelligent servo mod for DIRECT SELECT) ESM timeout.

Central Gateway (CGW):
 No errors

Keyless Sensor:

• Left front door handle has malfunction. Open circuit.

Overhead Control Panel:

• CAN received timeout N93 (CGW control unit). Do not replace OCP, troubleshoot on CGW.

Upper Control Unit:
 No errors

SAM-F:

• Control module N80 (Steering column module) not sending data.

Rear SAM

• Vehicle speed not present or faulty.

Instrument Cluster:

• CAN bus off.
• ESP not sending data.
• Motor electrical (ME) not sending data.
• Transmission unit not sending data.
• CGW not sending data.
• N51 airmatic with ADS control module not sending data.
• Airbag not sending data.
• Left Front R Tension R not sending data.
• Right Front R Tension R not sending data.
• Intelligent servo not sending data.
• TPM (Tempomat) not sending data.

SRS:

• No CAN bus message from control unit N73 (EIS [EZS] control unit).
• No CAN message from N73.
• No CAN message from control unit A1 (instrument cluster).
• No CAN message from control unit N93 (CGW control unit).

Weight Sensing System:
 No errors

LFR Emg Tension:

• Com with electric ignition switch missing.
• Drive train CAN communication malfunction. Bus off.
• Com with SRS malfunction.
• Com with CGW malfunction.
• Com with ESP malfunction.
• Implausible data from ESP. Invalid signal.
• Implausible data from SRS. Invalid signal.
• Implausible data from SRS. No signal present.

RFR Emg Tension:

• Com with electric ignition malfunction
• Com with ESP malfunction.
• Drive train CAN com malfunction. Bus off.
• Com with SRS malfunction.
• Implausible data from SRS. Invalid signal.
• Implausible data from SRS. No signal.

AcT Ser Sys:

• Not receiving messages from interior CAN bus.
• Not receiving messages from engine CAN bus.

Act Ser Sys Plus:
 No errors

Steering Column:

• Fault in CAN communication with EIS
• Fault in CAN communication with instrument cluster.
• Fault in CAN communication with CGW.
• Fault in CAN communication with A80.
• Fault in communication on engine CAN bus.

Front L Door:
 No errors.

Front R Door:
 No errors.

Rear Door:

• Contract strip 2 for anti-pinch has malfunction. Open circuit.

AC:
 No errors.

Parktronic:

• 905D not in DB.
• 9057 not in DB.
• Fault in CAN communication with Rear SAM.

ESA Driver Seat & Passenger Seat:
 No errors.




==============================
OBD2 readings:

ECU1($FD00)
U0155
U0101
U0002
U0146
U0121
P2158

ECU2($FD20)
U0100
U110B
U0002

 

[StenoPete1911]

Thanks, @StenoPete1911. I've got codes for days! It's funny because I have so much info that I feel like the answer is here, I just have to put all the pieces of the puzzle together.
Sorry for the long post, but here's what I see:


Errors on dash causing car to ask driver not to shift and take car to service.

Errors found using the iCarsoft MBII scanner:

ISM:

• Redundancy system for DIRET SERVICE was activated. There is a short circuit to positive.
• CAN bus malfunction. Bus off
• Communication with ESP malfunction. Message missing.
• Communication with engine control unit malfunction. Message missing.
• Communication with transmission control unit malfunction. Message missing.
• Communication with electrical ignition lock malfunction. Message missing.
• Communication with direct service lever malfunction. Message missing.
• Communication with central Gateway malfunction. Message missing.

Fuel Pump:
 No errors

Tire Pressure:

• Com with elec ignition lock malfunction.
• Com with instrument cluster malfunction.
• Fault code not in DB, C10100.
• Com with CGW malfunction.
• Com with engine control unit malfunction.
• CAN bus off.

Electric Ignition Switch (EIS):

• No CAN message received from A80 (Intelligent servo mod for DIRECT SELECT) ESM timeout.

Central Gateway (CGW):
 No errors

Keyless Sensor:

• Left front door handle has malfunction. Open circuit.

Overhead Control Panel:

• CAN received timeout N93 (CGW control unit). Do not replace OCP, troubleshoot on CGW.

Upper Control Unit:
 No errors

SAM-F:

• Control module N80 (Steering column module) not sending data.

Rear SAM

• Vehicle speed not present or faulty.

Instrument Cluster:

• CAN bus off.
• ESP not sending data.
• Motor electrical (ME) not sending data.
• Transmission unit not sending data.
• CGW not sending data.
• N51 airmatic with ADS control module not sending data.
• Airbag not sending data.
• Left Front R Tension R not sending data.
• Right Front R Tension R not sending data.
• Intelligent servo not sending data.
• TPM (Tempomat) not sending data.

SRS:

• No CAN bus message from control unit N73 (EIS [EZS] control unit).
• No CAN message from N73.
• No CAN message from control unit A1 (instrument cluster).
• No CAN message from control unit N93 (CGW control unit).

Weight Sensing System:
 No errors

LFR Emg Tension:

• Com with electric ignition switch missing.
• Drive train CAN communication malfunction. Bus off.
• Com with SRS malfunction.
• Com with CGW malfunction.
• Com with ESP malfunction.
• Implausible data from ESP. Invalid signal.
• Implausible data from SRS. Invalid signal.
• Implausible data from SRS. No signal present.

RFR Emg Tension:

• Com with electric ignition malfunction
• Com with ESP malfunction.
• Drive train CAN com malfunction. Bus off.
• Com with SRS malfunction.
• Implausible data from SRS. Invalid signal.
• Implausible data from SRS. No signal.

AcT Ser Sys:

• Not receiving messages from interior CAN bus.
• Not receiving messages from engine CAN bus.

Act Ser Sys Plus:
 No errors

Steering Column:

• Fault in CAN communication with EIS
• Fault in CAN communication with instrument cluster.
• Fault in CAN communication with CGW.
• Fault in CAN communication with A80.
• Fault in communication on engine CAN bus.

Front L Door:
 No errors.

Front R Door:
 No errors.

Rear Door:

• Contract strip 2 for anti-pinch has malfunction. Open circuit.

AC:
 No errors.

Parktronic:

• 905D not in DB.
• 9057 not in DB.
• Fault in CAN communication with Rear SAM.

ESA Driver Seat & Passenger Seat:
 No errors.




==============================
OBD2 readings:

ECU1($FD00)
U0155
U0101
U0002
U0146
U0121
P2158

ECU2($FD20)
U0100
U110B
U0002

Hello. Thanks for the detailed post and as always, the answers do lie within a problem.

Let me ask you, are these codes realtime or are they stored codes? MB OBD will store codes in memory if something occurs at any time along the way and then upon so many restarts it will clear it by itself, provided that the code does not occur within 30 restarts. With that said, lets assume, these are realtime codes, then from looking at it, it seems that you have a module malfunction in comms. There is a front SAM module, a rear SAM module, a ISO module, etc. Your make a model has tendency to leak water from the rear right light assembly into the rear SAM module compartment and it shorts the whole system. The seal becomes brittle and when you're driving in rain, then it gets into the compartment and causes all sorts of problems. From the looks of it, your batteries should be good, provided that they hold a charge and are within voltage specs for the vehicle.

From what I'm seeing in your codes, you will need to replace your front SAM, rear SAM and ISO module. Those will need to be reprogrammed from your VIN and DRIVE specs to your replacement parts. All three parts will need to be done. There are shops that reprogram these parts for customers, without going to the dealer, but as always, you need to be aware of prices and turnaround time.

I hate to say it, but it also might be that a mouse or some critter got into your wires and decided to chew threw some wires and it will be indicative of a failed SAM module error. Check your wiring and make sure it's solid, no loose wires, breaks, etc. If they are good then I point to what I said earlier that water got into your rear SAM compartment area and it just shorted it out. Start there and work your way forward. Hope this helps. GL.

 

[Deplore]

Could be bad cgw. Under driver seat, water likes to pool there.

 

[jrziggy]

I was had just pulled the batteries out to take them to the place I bought them for testing since they're only 2 years old. I stopped and thought I'd check a couple more places for water. Nothing under the driver seat (where CGW lives). Nothing in the battery compartment. Nothing under the spare tire or where the subwoofer lives (right rear quarter panel. The I checked the left rear quarter panel area and there's water! I couldn't believe it! I don't know yet how it got in there. So I unwrapped the wire harnesses there to see if there are inline connections - nope. So, the only place where this water would be an issue is the rear bumper wire harness connector to the left rear tail light assembly. What do you all think? In this picture taken from the rear of the car the wheel well is at the top of the picture covered in the yellow insulation and the tail light is at the bottom left. What is the black vent-type thing on the left? That's my first guess for water ingress as I can't think of how else it got in. The first time this problem happened we had been driving for hours in terrible rain. And it's been raining a lot recently... So - again, what do you all think? @StenoPete1911, you said right rear tail light, but this is left side - same issue? I don't see how it's getting in, but I know water is sneaky and exploits the smallest of gaps. I'll check the tail light seals better later on.

 

[Deplore]

Sunroof drain hose clogged or leaky taillight gasket.

 

[StenoPete1911]

I was had just pulled the batteries out to take them to the place I bought them for testing since they're only 2 years old. I stopped and thought I'd check a couple more places for water. Nothing under the driver seat (where CGW lives). Nothing in the battery compartment. Nothing under the spare tire or where the subwoofer lives (right rear quarter panel. The I checked the left rear quarter panel area and there's water! I couldn't believe it! I don't know yet how it got in there. So I unwrapped the wire harnesses there to see if there are inline connections - nope. So, the only place where this water would be an issue is the rear bumper wire harness connector to the left rear tail light assembly. What do you all think? In this picture taken from the rear of the car the wheel well is at the top of the picture covered in the yellow insulation and the tail light is at the bottom left. What is the black vent-type thing on the left? That's my first guess for water ingress as I can't think of how else it got in. The first time this problem happened we had been driving for hours in terrible rain. And it's been raining a lot recently... So - again, what do you all think? @StenoPete1911, you said right rear tail light, but this is left side - same issue? I don't see how it's getting in, but I know water is sneaky and exploits the smallest of gaps. I'll check the tail light seals better later on.
View attachment 2795797

Hello. Glad to see that you found the problem. Remember, water does not have to be pooling in and around electrical wires/equipment to be a direct culprit, but moisture will do just the same, and it does not have to be in the same area. To answer your question - yes, both sides are susceptible to gasket failure. That hole or gromet with a puncture in the middle, is a drain hole. I'm assuming the circular hose that comes down, is your drain hose from the roof or rear roof. Unplug that and check for blockage, etc. You can run a wire up the hose or blow pressurized air into it. Don't even worry about checking the gaskets for the rear light assembly, on both sides. Assume they're both bad and just replace them. Check the rubber seals around the doors and rear hatch. There's a lot of water that comes around those and if there's an exploit then you'll have water in the car. GL.

 

[jrziggy]

Still trying to find where the water got in, but the car is driving great with no errors. I'm thankful for that! Especially that none of the electronics were fried. Going to monitor this after every type of exposure to water - straight rain, carwash, driving in rain, etc. Might even get some of that tape that reveals water exposure so I can find the water trail. Anyhow - all this to say, thanks to all who replied and wrote before me who I went to school on. Hopefully I can transition now from a helpee to a helper. lol

 

[Tyrone]

This happened to me ...just discovered the problem with my 09 gl550. when I tried to use rear windshield washer. Bluish Fluid leaked inside rear hatch each time I activated spray function. Check rear windshield washer hose.

 

[jrziggy]

Good suggestion. I found after a heavy rain the water is somehow coming down inside left area next to rear cargo door. Inside though, in the frame, on inside of taillight, but originating above the taillight somewhere. I’ll have to pull the rear trim apart at som point and find the exact route and fix it.