Will the Ultragauge work on the 2013 Optima SXL? I have no idea if it is ODBII complaint and in any case don't know where the plug is located.

I have one on my 2012 Sprinter and use it all the time since there are so few gauges on that machine; just speedo, tach and fuel gauge (that's a laugh 10 bars in decreasing size). No oil pressure/temp, tranny pressure/oil pressure. Oh, it does have an ambient air temp readout.

In any  case I do want an Ultragauge for the Optima, which I assume is compatible.

Thanks, Robert

Thanks, I'll Google that.

Robert

VE is ignored on vehicles with MAF sensors.

So why did you suggest I enable it in an earlier post?

Robert

If you vehicle has a MAF sensor, then the VE is unimportant.  If you do not have a MAF sensor, then I would lean toward enabling the volumetric efficiency first.

Thanks again, I'll check for a MAF sensor first thing in the morning then go from there.

Robert

Got the scare of my life the other day. I’d finally installed my UG and was testing it. Worked great.

Set the engine size and fuel tank capacity ( 3.0 L and 25 USG [BTW it is a 2011 2500 MB Sprinter high top 144 inch wheel base]) and when I left my bumpy gravel road and got onto pavement, up a 8% or 9% grade the instantaneous MPG read 1.5 or so, scared the bejesses out of me.

Out on the road on a 400 mile trip the average MPG got up to slightly over 8.6 while the instantaneous MPG ran from about 5.6 to 9.5 (or there abouts).

Now I keep meticulous fuel records so know that over the life (a whole 5900 miles) that the average MPG is slightly over 20 which doesn’t jibe with the UG figures.

I have not yet “calibrated” UG yet but it seems to me those figures are a bit (lot) low. Obviously I’m going to have to get out on the road to do the calibrating but reading the instructions it seems extremely complicated. Added to that I live in Connecticut where there are no straight, flat roads and few mile markers. I will have to go over the border to New York and do a ten mile calibration and see if that works miracles.

So I ask is the calibration process going to bring UG’s figures nearer to the calculated average MPG?

Robert 

Let's assume that there is an "oil quality" sensor.   Such a sensor might have an output range of 2V to 7V.  With 2V being good quality and 7V being the worst.   If the computer reads the sensor and finds a value of 10V, then you get a "Engine Oil Quality Sensor Circuit High"    Likewise if the computer read 0.5V, then it might output "Engine Oil Quality Sensor Circuit low".

Yikes! There is an "oil quality" sensor in all Mercedes Benz's according to my local MB service manager. Somehow it can tell the difference in viscosity from normal and tell if fuel or water is in the crank case.

I would avoid taking it to a shop.  They will just take your money and may or may no fix the problem.  Instead, purchase a factory shop manual.  Factory shop manuals are sold by the manufacturer.  Avoid the manuals found at the auto parts store.   A factory shop manual will have very detailed specific information and will cover the various sensors.   Buying factory manuals on-line is the way to go.  You can even find them on ebay.

Fortunately my Sprinter is still under warranty so won't cost me anything. Shop manual(s) sounds like a good idea but will have to wait for later.

Robert

Engine Oil Quality Sensor Circuit High

Thanks, but what does that mean? I only have slightly over 5000 miles on it (bought it new).

How can "Oil Quality" be sensed/known by the ECM or whatever other computer is used, and what does it mean the circuit is high (voltage or current high)?

  Robert

Problems solved. Plug was just extremely tight so it took extraordinary force to remove it but I got it done-no damage.

The other "problem" was "fixed" when I pushed the up button while the engine was running (should have read the instructions a little closer and I would have found those directions).

So all seems to be ok. I'll find out for sure on my next trip.

Robert

Although the web page says the gauges will not be in stock until 12/27/11 I got mine yesterday 12/14/2011. Great service, thanks.

Printed the users manual this morning and will go over it later today, sort of "If all else fails....." before all else fails.

Looking forward to seeing how it works. I'm particularly interested in overall MPG and to a lesser extent instantaneous MPG. Other gauges will be added later.

As an Oversize load escort I put on anywhere from 3000 to over 5000 miles a month (the first week of escorting saw 2300 miles).

Have to find a place to put it, I have a 2011 MB Sprinter with a lot of stuff on the dash and don't know if I want to mount to the windshield or not. Can't put it over the steering column as it would obscure the readouts on the little screen. I'll find a place eventually.

Ok. got the info from my loal MB dealer. The 2011 Sprinter is in fact ODBII compliant. The connector is supposed to be in the fuse box under the dash. Couldn't fine it before so will have to look closer.

Now I can order a UG.

Robert