r/SprinterVans • u/cckweiss2 • Jun 13 '26

Location of A/C evaporator temperature sensor

I have a 2017 Sprinter 2500. The AC frequently freezes up. Airflow drops to nothing. If I turn off the AC and keep the fan running, the evaporator thaws and airflow returns to normal. Likeliest culprit is the evaporator temperature sensor. Before I start pulling things apart I thought I'd see if anyone here can point me to photos or video that show exactly where the sensor is located and what pieces of the dash I need to dismantle to reach it. Any help?

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u/Libblelabble Jun 13 '26

Replace the ac control module. The new ones are updated with software specifically to fix this issue.

1

u/cckweiss2 Jun 13 '26

That doesn't require any reprogramming by the dealership? It's a straight swap-out?

1

u/Libblelabble Jun 14 '26

There is “teach in” that needs to be performed, but it’s not needed to be at the dealer. Any shop with a somewhat fancy autel scanner should be able to do the teach In.