Radiator fan not kicking in
04-16-2016, 12:38 PM
#1
Junior Member
Thread Starter
Join Date: Nov 2013
Location: Bucharest, Romania
Posts: 30
Received 0 Likes
on
0 Posts
2020 GLE 450 W167
Radiator fan not kicking in
The coolant temperature in my C250 sometime hits 105C and the radiator fan still doesn't kick in.
In normal driving conditions the temperature stays at about 90 - 95C. The ambient temp is about 25C.
But when I`m in the mood to floor it and shift at 4k rpm for a couple of minutes and then pull over and stay at idle for another couple of minutes, i can see the coolant temperature rising. Today it got to 105. If I look at the dashboard it shows about 90C. But I have a bluetooth OBD device and I was looking at it in real time. At 105C, standing still and at idle, the radiator fan still wasn't working.
Also, i can see the intake air temp with the OBD. When i stand still the engine compartment gets heat soaked. The intake air temp gets to 50C - 60C. It drops to about 35C when i start driving.
I know the fan on these cars kicks in at pretty high temperature, but isn't 105C too much?
In normal driving conditions the temperature stays at about 90 - 95C. The ambient temp is about 25C.
But when I`m in the mood to floor it and shift at 4k rpm for a couple of minutes and then pull over and stay at idle for another couple of minutes, i can see the coolant temperature rising. Today it got to 105. If I look at the dashboard it shows about 90C. But I have a bluetooth OBD device and I was looking at it in real time. At 105C, standing still and at idle, the radiator fan still wasn't working.
Also, i can see the intake air temp with the OBD. When i stand still the engine compartment gets heat soaked. The intake air temp gets to 50C - 60C. It drops to about 35C when i start driving.
I know the fan on these cars kicks in at pretty high temperature, but isn't 105C too much?
Last edited by slaurro; 04-16-2016 at 12:42 PM.
