Obd not reading - MBWorld.org Forums

Jul 19, 2019 | 04:44 AM

tray will

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Joined: Jul 2019

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s600

Obd not reading

I have a 2008 s600 that’s in limp mode I try to connect several scanners to it including an expensive scan tool it would not read. The scanner powers on but wit not connect to car to read codes any idea what’s wrong ?

Jul 20, 2019 | 07:58 AM

antiguangenius

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Joined: Dec 2017

Posts: 230

Likes: 38

From: NYC

2008 S550 4Matic, 2007 GL450, 2008 C300, 2018 GLE63 AMG

Quote:

Originally Posted by tray will

blown fuse for the diagnostic module

Jul 20, 2019 | 04:56 PM

MBENZTECH

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Joined: Feb 2007

Posts: 601

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From: Republic of Texas

W203 W212 W211 R53MCS

If you have power and ground at the OBD2 connector and no communication is available..... Then check your central gateway module.

Jul 21, 2019 | 07:29 PM

antiguangenius

Member

Joined: Dec 2017

Posts: 230

Likes: 38

From: NYC

2008 S550 4Matic, 2007 GL450, 2008 C300, 2018 GLE63 AMG

Quote:

Originally Posted by MBENZTECH

If you have power and ground at the OBD2 connector and no communication is available..... Then check your central gateway module.

if central gateway is down the dashboard will be a Christmas tree

Jul 27, 2019 | 02:02 PM

Polar Bear

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Joined: Nov 2004

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W221 S600, W220 S55 AMG Kompressor, W124 300E, W140 S320, W210 E3204M W164 ML320 Bluetec

The fact it is in limp home mode could be related. Have you disconnected the battery/batteries, reconnected and checked again?

Jul 28, 2019 | 09:49 PM

antiguangenius

Member

Joined: Dec 2017

Posts: 230

Likes: 38

From: NYC

2008 S550 4Matic, 2007 GL450, 2008 C300, 2018 GLE63 AMG

Maybe your ecu is defective, it's not reading the vin, some scanners if they don't read vin the won't connect, do a manual vin entry then read modules one by one

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