W164 goes into limp mode, no power - Mercedes-Benz Forum
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post #1 of 15 (permalink) Old 04-07-2019, 05:36 PM Thread Starter
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Date registered: Jul 2017
Vehicle: 2007 gl450, 2006 ml350, 2002 s430, 2006 clk500, 2005 ml500
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W164 goes into limp mode, no power

I have a 2006 ml350. The car had issues with MAP sensor and throttle body actuator which i changed. The car keeps going into limp mode and loses power. It gives this code

905D Component F58kH( Circuit 15 relay ) is defective or missing, or the feed line has Open circuit.

I changed the fuse box under the hood, part of it seemed burnt so i bought a used one off ebay and also changed the front SAM. But still goes into limp mode. This has made it impossible for us to drive this car. The machine gives several other codes which i think are related to this one. Could this be a grounding issue? I read somewhere else someone had same code and jt was a ground issue. Has any one had similar situation? Any help will be much appreciated
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post #2 of 15 (permalink) Old 04-08-2019, 02:14 AM
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And what are the other codes, all of them?

Do you still have the old fuse box? If so, take a photo of this burnt area and post it.

What was the part numbers of the old fuse box and the new fuse box?

Post your full vin#.

Last edited by 43sqd; 04-08-2019 at 03:10 AM.
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post #3 of 15 (permalink) Old 04-16-2019, 10:49 PM Thread Starter
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Sorry for the late reply. That code no longer shows but it has a ton of other codes which i feel is being triggered by one thing. I will post pics. And for the old fuse box, it looked burnt around circuit H when i opened it up, unfortunately i threw it away. I believe the replacement was from an R class or GL. Though i took out fuse box in my GL and tried it and same symptoms. It keeps going into limp mode and won't move, no ppwer. Has to be restarted.
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post #4 of 15 (permalink) Old 04-17-2019, 01:26 AM
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None of those photos are readable. And I am assuming that all those codes were read after you replaced the fuse box and the front SAM. Codes should have been read before and after component replacement.

What is the part number of the new fuse box?

What is your vin# ?

Last edited by 43sqd; 04-17-2019 at 01:37 AM.
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post #5 of 15 (permalink) Old 04-17-2019, 04:48 AM Thread Starter
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4jgbb86e46a038883 is the vin and part # is a1645400072. The code before it was replaced was f58kh. 2 days ago, i wiggled and pushed in both circuit 15 relays in the front and rear fuse boxes, now the f58kh does not show up on the scanner. Instead the new codes i posted show up. I will post better pics
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post #6 of 15 (permalink) Old 04-17-2019, 04:56 AM Thread Starter
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W164 goes into limp mode, no power-20190416_095724_1555501810987.jpg
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post #7 of 15 (permalink) Old 04-17-2019, 05:33 AM Thread Starter
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c321 event: control module n73 (eis[ezs] control unit) is not sending any data
c32a event: no or incorrect CAN message from control unit DCM-FR
905e there is a discontinuity in the line to component g2 (generator) or the component is defective
9025 No CAN message was received from control unit n10 (front SAM control unit)
9029 No CAN message was received from control unit n22/1 (aac/cns/ics control module)
9024 No CAN message was received from control unit n10/8 (rear SAM control unit)
9038 watchdog error: the control unit has been reset due to an internal error
9020 No CAN message was received from control unit n73 (eis[ezs] control unit)
9033 the control unit n72/1 (upper control panel control unit) no longer sends on the can bus (can bus off)
9702 CAN reception timeout: a1 (instrument cluster). do not replace control module ocp.
9708 CAN controller: CAN bus off
9704 CAN reception timeout: n10/8 (rear SAM control unit). do not replace control module ocp
c004 CAN bus low open circuit
c006 CAN bus low short circuit to GND
5024 one or more signals sent from control unit engine management via the CAN bus is implausible
1061 the load limit is active
0872 the torque calculation of the control unit has a malfunction (p061b)
0407 component y16/2 (heating system shutoff valve) has an open circuit in the wiring (p0115)



these are some more of the codes.
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post #8 of 15 (permalink) Old 04-17-2019, 05:53 AM
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You bought the wrong front SAM. Get the correct one and install.

Then erase all codes and try and start the engine.
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post #9 of 15 (permalink) Old 04-17-2019, 06:01 AM Thread Starter
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do you mean the front fuse box? the part number i gave was for the fuse box. the front SAM i purchased is part number 1645458032. Now i wonder if my old SAM was actually bad? i still have my old SAM, i will look up the part number and post it.
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post #10 of 15 (permalink) Old 04-17-2019, 06:08 AM
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It's the wrong SAM.
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