2010 GLK350 M272 - Radiator Fan on Full Blast, No A/C, Engine Temp. Ok
05-17-2019, 03:16 PM
#1
Super Member
Thread Starter
2010 GLK350 M272 - Radiator Fan on Full Blast, No A/C, Engine Temp. Ok
What could be the cause of this? It is likely the lack of A/C is related to the radiator fan operating on full constantly (probably a fail-safe feature for the A/C system).
Fan started operating on full blast after coolant was added to the system and cap was no tightening letting air into the system.
Fan started operating on full blast after coolant was added to the system and cap was no tightening letting air into the system.
05-21-2019, 01:42 AM
#4
Super Member
If you added coolant and forgot to tighten the cap.... most likely it boiled out and air got in the system. You need to bleed the system and erase the codes in engine control module. You will have a code for coolant temp sensor malfunction. If not, then your ECU might be the problem. But proper diagnostics will be required.
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biker349 (05-22-2019)
05-21-2019, 06:22 PM
#5
Super Member
Thread Starter
If you added coolant and forgot to tighten the cap.... most likely it boiled out and air got in the system. You need to bleed the system and erase the codes in engine control module. You will have a code for coolant temp sensor malfunction. If not, then your ECU might be the problem. But proper diagnostics will be required.
Last edited by LandSeaAir; 05-21-2019 at 06:46 PM.
The following users liked this post:
biker349 (05-22-2019)
