R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

OBDII Has NO Power

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Old Jul 20, 2023 | 12:03 PM
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hujirong's Avatar
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R350 Bluetec
OBDII Has NO Power



pins looks ok but has no power

My OBDII scanner won't light up. I checked pin 16 has no power.
Checked the fuse #58 in the trunk has power: https://www.benzworld.org/threads/r3...ation.3087100/
In fact, I checked all fuses in the trunk only #49 has no power, all the rest have.

Battery just changed by myself, bought from dealer. OBDII has no power before battery was replaced, I thought was not enough voltage. Cigarette light port works fine.

Anyone has the wire diagram for this car? 2013 R350 BlueTec.


Thanks
Jirong

Last edited by hujirong; Jul 20, 2023 at 05:13 PM.
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Old Jul 21, 2023 | 04:41 AM
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2010 ML550 VIN WDC1641722A564750, 2010 B180
Did you check for power on the line coming into Pin 16?
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