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‘16 Mercedes GLE450 amg,’15 Mercedes gla, coupe,’07 Mercedes w221,’12 Audi A
Acc unit errors
Hello, I am seeking assistance with diagnosing issues related to my ACC control unit. The unit has produced fault codes pointing to potential problems with parts #2118300472 and #2118701310. Upon further investigation, I found that part #2118701310, the Sun Load Temperature Sensor, is not generating any values. Could you please advise if there is a fuse linked to this component? Additionally, I observed that this part has been replaced by a new part number.
Absolutely no readings from the sensor
there a ambient light sensor - might do temp to, its on the top middle of the screen - but it gets so hot there would seem strange - unless it works with silly number trying to work out solar gain
the whole light thing you have in the photo is the OHP over head control panel (aka DBE) - not to be confused with the heater buttons the UCP - if you do any SW update on the OCP key must be OUT of the ignition or the car goes mad - swapping this is likely to be "interesting"
‘16 Mercedes GLE450 amg,’15 Mercedes gla, coupe,’07 Mercedes w221,’12 Audi A
Even with the overhead panel coded correctly the sun sensor doesn’t read anything and I did this test on very sunny day and the temperature was 80 degrees. So I ordered part# Light Sensor 211-870-13-10 which goes on the left grille in the picture. What sensor goes on the right side grille? I looked on wis on star and nothing.
‘16 Mercedes GLE450 amg,’15 Mercedes gla, coupe,’07 Mercedes w221,’12 Audi A
Botus,
I've been reflecting on a previous modification I made when i had the stars headliner done, where I replaced the grey overhead panel with a black one. Regrettably, I didn't realize that the overhead panel required coding. I subsequently watched a YouTube video where a guy discussed the need to transfer the coding from the old to the replacement overhead panel. With that being said, the sun sensor attached to the left hood grille still doesn't read anything. I have two questions: should it be reading something, and what is the purpose of the sensor attached to the right hood grille?
if you saw the hell going round the canbus from flashing the OCP - I can imagine there are many versions with low spec cars just about getting a light, and the high spec ones controlling half the worlds internet
it also does stuff differently based on the type of seats in the car and the software version in the rear SAM - my car gets 9 interior heat sensors... and I believe the option rain sensing sunroof closing is both optional and wasting battery all the time (but maybe only if the sunroof is ajar / open)
I never knew that grill has a sensor - I guess the other side is just designed to match ???
‘16 Mercedes GLE450 amg,’15 Mercedes gla, coupe,’07 Mercedes w221,’12 Audi A
Botus or Tim,
I recently purchased the AC CLIMATE CONTROL SWITCH 2219052700 as a replacement for my current unit. Given that I previously recoded my acc/heater module with Botus' assistance, I would like to inquire whether the installation of this newer AC climate control switch necessitates recoding or if it is simply a plug-and-play procedure? The climate control switch was sourced from a 2010 Mercedes S550 with the VIN # WDDNG8GB0AA335882, which did not feature rear air conditioning.
The newest part # for this controller as per Mercedes
also - you never confirmed if you turned the magnetic clutch to off ? the later better systems have variable rate always On compressors - so do not have old world clunk and its On, clutches - So if you leave that setting as On you’ll never have the AC system wake up
Whilst it looks like USA cars get a bigger compressor - so I guess possible its a different design and needs it on - I don't think it has the old world idea. In your setup it seems to list that it has a different system - which might be the first time an American has bothered to shows something sensible (in grammes) instead of gibberish
mine with the additional capacity of rear AC I think suggests its a 1371g system (certainly its around there whereas a stock one with just front AC is only 900g)
National version climate control Europe ( Standard )
Transmission ratio Refrigerant compressor I = 1,371 (Info: M272/M273/M278 DE+KE)
where yours has
National version climate control ( Hot Countries )
Transmission ratio Refrigerant compressor I = 1,504 (Valid for tractors and gasoline engines of model : M272/M273 with port injection for national versions 'USA' and 'Japan')
‘16 Mercedes GLE450 amg,’15 Mercedes gla, coupe,’07 Mercedes w221,’12 Audi A
Botus,
I obtained the panel for $25 and will be installing it either today or tomorrow. In response to your query about the magnetic clutch, I am uncertain. I think it may have been on and I turned it off, or conversely.If I enable the heated windscreen, I will receive the error message I previously encountered before setting it to inactive.
I obtained the panel for $25 and will be installing it either today or tomorrow. In response to your query about the magnetic clutch, I am uncertain. I think it may have been on and I turned it off, or conversely.If I enable the heated windscreen, I will receive the error message I previously encountered before setting it to inactive.
either there are two different heated screen ideas or ?
one bit of coding for heated screen is in the UCP and previously you said it was On and in my car its set On - I was suggesting you put it back how it was on the new part ?
there is another bit of coding in the AAC module that was On on yours giving a fault and Off in mine - and when I enable its brings up the same LIN bus fault
and yet more confusion in the Front SAM with coding for heating elements around the wipers
Mine used to work - if it was frosty all around the front screen, the camera and the the wiper area automatically turned on and melted the ice - then the halfwits at Mercedes broke it - with an update but I don't know which
Maybe it needs really needs to be OFF in the UCP and On in the ACC but Merc are too stupid to Know that they are doing with SCN ???
I think the mix up is early cars had it and later cars may not have and the later junk facelift Eng idiots never knew what they were doing...
Or perhaps the halfwits doing the Front SAM are to blame.... My dealer updated Front SAM done back in 2019 and printed out the paperwork
SCN coding for
Washer nozzle heater
Windshield wiper
Air conditoning
Heated Steering wheel
Auxiliary fan Coolant
but in side there we really have Coding for (see red)
MRV parameterization, functional requirements (emission label BS early euro car never had)
Light parameterization
Control unit box fan parameterization
Recuperation parameterization: channel setting
Washer fluid level parameterization
Wiper parameterization Wiper rest heater parameterization - where mine says Wiper parked position heater - installed
SRA (Headlamp washers)
Transmission oil cooler/water cooler installation status
LRK (Heated Steering wheel) installation status
Washer nozzle heater installation status
Water valve installation status
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