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Cannot communicate with any modules except DME and TCM
I posted recently about issues with trying to obtain a new key for 2001 X5 4.4i. After paying the dealer for a new key, it did not work, and would not let the car start (or crank) however all the electronics in the car turn on. Dealer told me it was because they cannot communicate with the EWS. Once I was home, I tried to communicate with the EWS using INPA and NCS Expert, but I was unsuccessful. Then, I realized that I cannot communicate with any modules in the car at all other than the DME and the TCM. Can anyone help me out as to what the problem can be? Dealer says water corroded wiring to the EWS module so it doesn’t work, but this doesn’t add up to me because the car still starts with the first key I had (and currently have). They say once they address the connection problem to the EWS, they can find out if the key is bad, or if it’s the car refusing the key. Can anyone help me out as to what the issue may be here? Any tips would be greatly appreciated because I’m completely stumped, and out $300 for a key that doesn’t work. Thanks! |
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#2
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I just read that one wire goes to all the modules except the TCM and DME so you may be able to find it without too much difficulty.
Also: is your build date before 7/01?
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#3
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Car is a 2001 model year, build date is 08/2000 |
#4
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I asked because my wife's 01 I call a 2000.5 because it still has the 20 pin connector under the hood and really complicates certain connection issues.
I'm pretty sure that was done with after 7/00. Make sure though the 20 pin connector is right above the left front wheel well.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#5
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This would explain a lot of things.
If the vehicle has round 20 pin diagnostic port only that is fully connected. Some transition time models have both diagnostic ports but on those OBD2 is only connected to power train modules. .
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E39 530dA -02 M-Sport Messing metallic E53 X5 3.0dA -06 Sport Stratus grey Last edited by Clavurion; 05-14-2020 at 06:49 AM. |
#6
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Get an adapter that allows you to connect your laptop to the 20 pins connector under the hood.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD |
#7
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In a pinch, you can just jump the wires in your 20 pin and your 16 pin under the dash will work on all modules.
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Digital Competition Systems The older I get... The faster I was... No Fear |
#8
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Caveat, if you don't know what you are doing trying this little fix can ruin the DME. You will be in a worst pickle if you burn out your DME.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD |
#9
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I put Jumpers in the cap of my wife's 20 pin. I took and posted photos but it might take a miracle to find.
Build date of 8/00 it shouldn't have the 20 pin connector but will have the equivalent wiring so as suspect by the dealer, corrosion or damaged wire is likely. I would first locate EWS box and disconnect and clean the connection. Then if nothing obvious open up the E box and "exercise" the plugs to the DME (remove, clean, replace)
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#10
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