ML270cdi Faulty fuel gauge reading
Thread Starter
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Junior Member
Joined: Dec 2009
Posts: 4
ML270cdi Faulty fuel gauge reading
Hi to all members, I have just aquired a 2001 ML270cdi and have fuelled on 2 occasions but the fuel gauge reads just above half.
I would like to inspect the tank unit and would like to know the easiest way to get to it?
Regards
Arthur
I would like to inspect the tank unit and would like to know the easiest way to get to it?
Regards
Arthur
Senior Member
Joined: Jan 2005
Posts: 429
From: USA Chicago
Arthur, welcome to this forum and to our normal daily ML problems.
Latest on 2001 ML fuel gauge reading Mercedes has a bulletin to remove #5 fuse to let the computer remonitor fuel level and readjust to it.
I have the same problem on my 99 ML320 but I got used to it by now. Here I have found the bulletin:
DTB May 13, 2002 order # T-B-54.30/64 group 54
Subject: model 163.154/174/175 year 2001 and 2002
Fuel gauge accuracy
If you encounter instances in the above model vehicles where the fuel gauge reading is inaccurate, please perform the following procedure prior to replacing any components.
1. Remove fuse 5 in the RSE2 fuse holder
2. Reinstall fuse 5 into the RSE2 fuse holder.
3. Instruct the customers not ot fill the fuel tank untill they have reached the 1/2 tank level on the fuel gauge.
The fuel gauge reading for MY01 and MY02 vehicles have a virtual calculation performed on the first 19 liters (MY02) or 7 liters (MY01) of fuel. When the vehicle is filled prior to depleting the gas tank to these levels, an offset is calculated and stored in the instrument cluster memory. This is the cumulative affect and can result in the vehicle showing an empty tank even when actually full of fuel. The above procedure will remove any offset stored in the instrument cluster and return the fuel gauge to the correct accuracy.
This may help you out.
Bernard
Latest on 2001 ML fuel gauge reading Mercedes has a bulletin to remove #5 fuse to let the computer remonitor fuel level and readjust to it.
I have the same problem on my 99 ML320 but I got used to it by now. Here I have found the bulletin:
DTB May 13, 2002 order # T-B-54.30/64 group 54
Subject: model 163.154/174/175 year 2001 and 2002
Fuel gauge accuracy
If you encounter instances in the above model vehicles where the fuel gauge reading is inaccurate, please perform the following procedure prior to replacing any components.
1. Remove fuse 5 in the RSE2 fuse holder
2. Reinstall fuse 5 into the RSE2 fuse holder.
3. Instruct the customers not ot fill the fuel tank untill they have reached the 1/2 tank level on the fuel gauge.
The fuel gauge reading for MY01 and MY02 vehicles have a virtual calculation performed on the first 19 liters (MY02) or 7 liters (MY01) of fuel. When the vehicle is filled prior to depleting the gas tank to these levels, an offset is calculated and stored in the instrument cluster memory. This is the cumulative affect and can result in the vehicle showing an empty tank even when actually full of fuel. The above procedure will remove any offset stored in the instrument cluster and return the fuel gauge to the correct accuracy.
This may help you out.
Bernard
Thread Starter
|
Junior Member
Joined: Dec 2009
Posts: 4
Thanks again for your help with the fuel gauge. Last week the low coolant level light came on and has stayed on even though the water level in the header tank is ok and the temp gauge remains normal. Do you think it may be a coolant temp sensor problem and if so can someone tell me where it is located?
Many Thanks
Arthur
Sydney Australia
Many Thanks
Arthur
Sydney Australia
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