2016 ac unit control
will the ac unit control from a 2014 be compatible in a 2016 e350 or will the part numbers be completely different?
Last edited by Cls63amgfan; Jan 31, 2023 at 11:27 PM. Reason: spelling




Do you have the VIN's involved ?
FYI: the MY'14 AAC modules are positively known to be built with unsoldered connections... '16 likely as well.
What sort of DTC's is that AAC up to?
Do you have the VIN's involved ?
FYI: the MY'14 AAC modules are positively known to be built with unsoldered connections... '16 likely as well.
What sort of DTC's is that AAC up to?




494 US version
805 nappa leather mocha brown / almond beige
806 Model year 2016
807 YoM 16/1
If I look up a generic 212.288 (e350 4matic wagon), I find these PN's...
A2129009109 replaced by A2129008608
A2129009309 replaced by A2129008808
A2129009209
A2129008708
A2129009409 replaced by A2129008908
A2129008808
A2129008908
A2129008608
A2129008708
A2129008411 replaced by A2129003114 replaced by A2129008811
A2129008511 replaced by A2129003014 replaced by A2129008911
A2129008611 replaced by A2129002914 replaced by A2129009011
A2129008711
A2129008811
A2129008911
A2129009011
.... oh geez, dozens more, my fingers are getting fried copy/pasting.
I didn't get around to copying which codes for which unit.
*ALL* of them say, Must be updated with latest flashware (firmware), and Must be coded to vehicle.
494 US version
805 nappa leather mocha brown / almond beige
806 Model year 2016
807 YoM 16/1
If I look up a generic 212.288 (e350 4matic wagon), I find these PN's...
A2129009109 replaced by A2129008608
A2129009309 replaced by A2129008808
A2129009209
A2129008708
A2129009409 replaced by A2129008908
A2129008808
A2129008908
A2129008608
A2129008708
A2129008411 replaced by A2129003114 replaced by A2129008811
A2129008511 replaced by A2129003014 replaced by A2129008911
A2129008611 replaced by A2129002914 replaced by A2129009011
A2129008711
A2129008811
A2129008911
A2129009011
.... oh geez, dozens more, my fingers are getting fried copy/pasting.
I didn't get around to copying which codes for which unit.
*ALL* of them say, Must be updated with latest flashware (firmware), and Must be coded to vehicle.
Last edited by Cls63amgfan; Feb 2, 2023 at 12:38 AM.




I can understand a HVAC CU costing $100, since it requires flashware (firmware) programming and option coding to match your vehicle, thats $$$$ at a dealer as very few independent garages can handle firmware or coding.
if you want to post your VIN, I can look up the correct PN for your HVAC control unit tomorrow.


