Hi E-Klasse, can I have the list of the codes for the REST button again please?

 

1 in-car temp
2 temp outside
3 heater core temp, left
4 heater core temp, right
5 evaporator core temp
6 engine coolant temp
7 refrigerant pressure (in bars)
8 refrigerant temp
9 not used
10 blower control voltage in range .8 - 6V (max)
11 air pollution sensor
12 sun sensor
20 control current of aux fan
21 engine RPM (x 100)
22 vehicle speed, km/h
23 terminal 58d battery charge, percent
24 battery voltage
40 software status register
41 hardware status register

 

Thanks buddy!

Let's check if 22 is in mph for an Euro spec......

 

It is always in km/h even here in the US.

 

E-Klasse -

What is item #22 used for?

23 terminal 58d battery charge, percent... Percentage of the capacity of the battery that is charged?

 

Mic: so you know your speed in KM/H!

E-Klasse, I guess 22s pretty much useless when I already have a KMH speedo (also can't understand why RPM is repeated there).

What (and how) does #11: "Air polution sensor" tell me?

 

i wish they had realtime gas mileage readings like bmw has on their hidden menus

 

Im just interested in what these are, what do you do with these codes ?

 

Press and hold the REST button on your AC for 12+ secs. These codes will come out on ur AC readout. Press auto on right and left to navigate. Codes tell u info per E-Klasse list - got it?

 

The speedometers read both kmH and MPH here in the US so it is not hard to verify your speed.

 

Bumping my question

 

Yep and tehre's a slight difference I noticed.

 

Whoops.. I meant #23.. the battery percentage deal...

 

Shouldn't there be one on the digital readout on the dash? I haven't checked but would expect so.

 

no I don't think so, unless I don't know how to get to it?

 

23 terminal 58d battery charge, percent
24 battery voltage

They read close to the same thing but at different points in the circuit. If you had a load on the circuit or an electrical problem the numbers would be greatly different. If all is well, they should be close to the same.

 

My 23 reads "0" with the engine running Does this mean its not working?

 

Checked my 2000 320 and it reads mph in the "rest" readout. At 40 mph on the speedometer, it read 40 on this display. I also have a 99 CLK but I have not checked its readout recently.

 

At one point mine read "00" but usually "100" . I don't know how to interpret these values...

 

Judging from the description of that, I guess it only has a value when the battery is acually charging????? Help E-Klasse!

 

There might be different software levels from year to year or in Euro vs US models to account for different readings. With mine the 2 voltage readings are less than 0.5 volts different and my speed reading matches the kmH value on my speedometer. According to all of the posts there are some that match MPH or the second voltage reading is % charge. Strange...

 

E-Klasse, which two voltage readings?

Pls correct me if I'm wrong , does the % on 23 represent the % of the battery's power level i.e. a fully charged battery should read "100" and if its "0" it means its dead?

BTW, where are you getting all this techno. info from?

Cheers.

 

What significance does terminal 58d have when troubleshooting the air conditioning?