w163 ml320
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Joined: Mar 2025
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w163 ml320
w163 ml320
Hi All.
I have a w163 ml320 which dose not start .So i am seeking some urgent help .
My question is relay k8 pins 85 and 86 i am getting the following readings
ignition position 2- 0v
ignition position 3- 3.5v
relay k12 has got 12v on ignition position 2 and 3
If i shorten k8 pins it turns over
ignition barrel ok
immobiliser ok going by the blinks of led
My question is what controls that voltage being sent ?
Is it the aam ?
Dose it have a fuse or a relay?
Does it need to be reprogrammed if i install another one ?
I look forward to the knowledge being shared thank you
mario
I have a w163 ml320 which dose not start .So i am seeking some urgent help .
My question is relay k8 pins 85 and 86 i am getting the following readings
ignition position 2- 0v
ignition position 3- 3.5v
relay k12 has got 12v on ignition position 2 and 3
If i shorten k8 pins it turns over
ignition barrel ok
immobiliser ok going by the blinks of led
My question is what controls that voltage being sent ?
Is it the aam ?
Dose it have a fuse or a relay?
Does it need to be reprogrammed if i install another one ?
I look forward to the knowledge being shared thank you
mario
Junior Member
Joined: Nov 2008
Posts: 31
Likes: 2
From: Lathrop, Ca
2005 ML350 Sport
In a W163 ML320, key position 2 (accessory on) should typically have a voltage reading of 12-14 volts. If the reading is significantly lower, like below 10 volts, it could indicate a dead or failing battery, potentially preventing the car from starting. You can check the voltage using a multimeter, placing the probes on the positive and negative battery terminals.
In a W163 ML320, key position 3 (the cranking or starting position) should provide battery positive voltage (B+) at specific pins within the K12 relay socket under the hood. Pin 1 of the K12 relay socket should receive this B+ voltage from the ignition switch when the key is in the crank position. Additionally, Pin 3 should receive constant B+.
In a W163 ML320, key position 3 (the cranking or starting position) should provide battery positive voltage (B+) at specific pins within the K12 relay socket under the hood. Pin 1 of the K12 relay socket should receive this B+ voltage from the ignition switch when the key is in the crank position. Additionally, Pin 3 should receive constant B+.
