335d DSC control unit Can't communicate

Lumi00 · 09-27-2023, 05:25 PM

I have been already to 2-3 workshops to fix this but none can’t fix my problem.

So the car showed one day after getting it tuned stage 2 some error codes first abs then brake after 1 min every light came on after that I couldn’t drive it normal my rpms didn’t work speed also the wipers just started to continue without stopping etc

A mechanic told me it’s the DSC control unit buyed an aftermarket one but still the same problem if I connect it you can’t read anything if I disconnect the DSC control unit you can read everything anybody that can help me with this please look here also some pictures

lnxguy · 10-02-2023, 07:13 AM

I bet your issue is either ground or FRM related. Wipers not turning off is a dead giveaway the FRM is toast.

Tambohamilton · 10-02-2023, 09:19 AM

Or battery voltage - have you checked your battery is good, and charging properly?

Tomnavigator · 10-31-2023, 01:31 PM

Lumi00,
I do not know what the problem is. But, I don't believe in coincidences. Your problems started almost immediately after reprogramming the engine control computer (tune). I also don't believe in multiple unrelated problems occurring at one time. If checking the ground does not fix your problems, I would put your original tune back in your car and see if the problems go away.

09-27-2023, 05:25 PM	#1
Lumi00 Registered 0 Rep 2 Posts Drives: Bmw 335d e92 Join Date: Sep 2023 Location: Belgium iTrader: (0) Garage List 2006 bmw 335D e92 [0.00] 2006 e92 [0.00]	335d DSC control unit Can't communicate I have been already to 2-3 workshops to fix this but none can’t fix my problem. So the car showed one day after getting it tuned stage 2 some error codes first abs then brake after 1 min every light came on after that I couldn’t drive it normal my rpms didn’t work speed also the wipers just started to continue without stopping etc A mechanic told me it’s the DSC control unit buyed an aftermarket one but still the same problem if I connect it you can’t read anything if I disconnect the DSC control unit you can read everything anybody that can help me with this please look here also some pictures Attached Images
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10-02-2023, 07:13 AM	#2
lnxguy Lieutenant Colonel 357 Rep 1,723 Posts Drives: 2009 335D Join Date: Jun 2016 Location: Barrie iTrader: (1)	I bet your issue is either ground or FRM related. Wipers not turning off is a dead giveaway the FRM is toast. __________________ '09 335D
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10-02-2023, 09:19 AM	#3
Tambohamilton Brigadier General 3058 Rep 3,910 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	Or battery voltage - have you checked your battery is good, and charging properly?
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10-31-2023, 01:31 PM	#4
Tomnavigator Private First Class 82 Rep 189 Posts Drives: 2010 335D, V-10 Touareg Diesel Join Date: Mar 2015 Location: Southwest Louisiana iTrader: (0)	Lumi00, I do not know what the problem is. But, I don't believe in coincidences. Your problems started almost immediately after reprogramming the engine control computer (tune). I also don't believe in multiple unrelated problems occurring at one time. If checking the ground does not fix your problems, I would put your original tune back in your car and see if the problems go away.
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