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Car Fan Comes On Randomly - Car Talk (2) - Nairaland

Nairaland ForumNairaland GeneralCar TalkCar Fan Comes On Randomly (14321 Views)

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Re: Car Fan Comes On Randomly by Pepisco82(m): 9:58am On Jan 06, 2021
Please I am having same issues how can I get your technician contact so I can fix my own. It is a Toyota venza
Re: Car Fan Comes On Randomly by Pepisco82(m): 10:13am On Jan 06, 2021
Chiboyo pls I need your technician contact or any means I could contact you so I resolve my issue asap.
Re: Car Fan Comes On Randomly by SamPeters: 5:39am On Jul 21, 2021
The same thing happened to my car, and I read somewhere that it's a consequence of the hot coolant. I hate that it kills my battery so bad. Apparently, all of the sensors that run the fan work, as well as the fuse that runs part of the cooling system, so it has to be caused by another thing. I'm going next week the fan temperature switches since someone on a forum suggested that they might've gone bad. I'll update you then and tell you if it worked. Also, I'm soon getting my MOT test done, and maybe they'll let me know what to do as well. I'll take a photo of the car tax check and post it here.
Re: Car Fan Comes On Randomly by autologic:
Part of some late model vehicle computer thermal management strategy is to continue to monitor the temperature even wen the vehicle has already been switched off and make appropriate actuation if necessary which is why it possible to see some fans coming up after the vehicle has been switched off .It also possible to to be some faults in the electrical systems or bad computer that might be responsible .
However repair method of average nigerian and our - so -called modern technicians to vehicle issues to be on lookout one- size -fit- all approach to problem by looking for that lone "silver bullets" all over the internet and forums for the "supposed" solution to the problem.Unfortunately using silve bullet approach might leave you disappointed even on same brand of vehicle cos same symptoms doesn't automatically translate to same root cause .
Solution is get the better understandong of the theory and practical design of your own vehicle operation before u can dig tru the troubleshooting and fish out the culprit.
The reality is this : You can't troubleshoot what u don't understand
Re: Car Fan Comes On Randomly by Nobody: 3:54am On Jul 27, 2021
autologic:
Part of some late model vehicle computer thermal management strategy is to continue to monitor the temperature even wen the vehicle has already been switched off and make appropriate actuation if necessary which is why it possible to see some fans coming up after the vehicle has been switched off .It also possible to to be some faults in the electrical systems or bad computer that might be responsible .
However repair method of average nigerian and our - so -called modern technicians to vehicle issues to be on lookout one- size -fit- all approach to problem by looking for that lone "silver bullets" all over the internet and forums for the "supposed" solution to the problem.Unfortunately using silve bullet approach might leave you disappointed even on same brand of vehicle cos same symptoms doesn't automatically translate to same root cause .
Solution is get the better understandong of the theory and practical design of your own vehicle operation before u can dig tru the troubleshooting and fish out the culprit.
The reality is this : You can't solve what u don't understand
I have this issue but only when engine is on and it’s high you can hear someone coming I’d I’ve been up all night the 3rd Rewire told me that it’s better knowing fully well it kills battery and alternator. I need a good Rewire
Re: Car Fan Comes On Randomly by autologic: 6:36am On Jul 27, 2021
solasoulmusic:
I have this issue but only when engine is on and it’s high you can hear someone coming I’d I’ve been up all night the 3rd Rewire told me that it’s better knowing fully well it kills battery and alternator. I need a good Rewire
Your location and brand of vehicle?
If you are in lagos ,my contact is on my signature and workshop is @ Yaba
Re: Car Fan Comes On Randomly by olumzzz(m): 5:56am On Aug 06, 2021
Xenisha:
Hi guys, I need some advice on choosing a car. I love off-road driving. I choose between a 2017 Nissan Patrol and a 2015 Range Rover Sport. As far as I understand, the Range Rover is more reliable, in contrast to the Nissan Patrol, which needs more careful maintenance. You may even have to buy a steam clean engine, I heard that Nissan Patrol has problems with the fact that while driving, sand gets under the hood. What do you think about these models? What will you advise me to purchase?
Nissan Patrol
Range rover
You can consider Toyota Landcruiser (not Prado o)
Re: Car Fan Comes On Randomly by Monaco2(m): 6:26am On May 06, 2022
SpaceAngel:
I didn't bother fixing again as it didn't in any way affect the car,but you can try what sultan suggested above.
Hello good morning, are you still using the car, is it still behaving same way because mine just started and my electrician told me it’s common with Highlander venza and sienna that carries venza engine.... it doesn’t affect my battery in any way but I just want to kno if you got it fixed
Re: Car Fan Comes On Randomly by matthew80(m): 8:36pm On May 19, 2024
Mine is a 09 Toyota Venza and I've been experiencing the same issue right from the moment I bought it. After the ignition is off and the car has rested for hours, the fan will start.
Re: Car Fan Comes On Randomly by sultaan(m): 4:09am On May 22, 2024
plug a scanner and check what engine temp says
Re: Car Fan Comes On Randomly by ebuks4ever(m): 1:53pm On Sep 18, 2024
matthew80:
Mine is a 09 Toyota Venza and I've been experiencing the same issue right from the moment I bought it. After the ignition is off and the car has rested for hours, the fan will start.
pls where you able to fix this?
Re: Car Fan Comes On Randomly by SilverG33k(m): 1:07am On May 29, 2025
I had this issue close to a year and i’ve been following up on the thread and i finally fix the issue

This is for anyone that has the same issue in the future

The fault is usually caused by a certain Kazeem that tried to manage connections on the fusebox, those things were not connected properly.

Its two things

Fan ECU which is the control unit on the fuse box
And the fan module which checks for temperature of the engine then turns on the fan when engine is hot

Just tell the rewire to fix the two of them, Infact replace if you can

That’s what i just did

Also if you have a tracker on your car, trackers are known to ping the car at intervals hence the car glitches from bad connections hence causing the fan to start for a few seconds, especially at 1am or 2am

Tl;dr
Fix ECU (the one on the fuse box) and Fan module(the one in front of the radiator), if you have a tracker, check the connection very well if you don’t want to remove the tracker.
Re: Car Fan Comes On Randomly by 2cribz: 5:05am On May 30, 2025
Story
SilverG33k:
I had this issue close to a year and i’ve been following up on the thread and i finally fix the issue

This is for anyone that has the same issue in the future

The fault is usually caused by a certain Kazeem that tried to manage connections on the fusebox, those things were not connected properly.

Its two things

Fan ECU which is the control unit on the fuse box
And the fan module which checks for temperature of the engine then turns on the fan when engine is hot

Just tell the rewire to fix the two of them, Infact replace if you can

That’s what i just did

Also if you have a tracker on your car, trackers are known to ping the car at intervals hence the car glitches from bad connections hence causing the fan to start for a few seconds, especially at 1am or 2am

Tl;dr
Fix ECU (the one on the fuse box) and Fan module(the one in front of the radiator), if you have a tracker, check the connection very well if you don’t want to remove the tracker.
1 2 Reply

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