Do Not Sell My Personal Information Jump to content

  • Join The Club

    Join the Lexus Owners Club and be part of the Community. It's FREE!


Servo Under Dash

Recommended Posts

Does anybody know of a remedy or temp fix, ive over the last 2 weeks started to notice a noise under the dash and ive been told it is probably the servo that controls the heater directions.

Link to comment
Share on other sites

There are several servo motors under the dash which control airflow through the various vents and perform cold/hot air mixing.

When the car ignition is 1st turned on it is normal to hear the servo flaps moving to their preset positions.

Have you checked to confirm the air comes out of the correctly selected vents ( windscreen demist, face level,footwell) and the temperature range is available.

Removing the pollen filter on certain Lexus models without the climate control set into a certain mode can cause damage to the flaps.

Link to comment
Share on other sites

Thanks for your replys unfortunately it is on constant, even if i only have the ignition on when my wife pops into a shop it is very annoying. I have checked all the different cycles and there is no position where fhe air is restricted.

Link to comment
Share on other sites

I guess the fix is to identify and change the motor.

( The colder weather may(?) help? )

I was lucky, I had mine done under warranty - but it would have driven me mad eventually.

Link to comment
Share on other sites

Is it like a constant whirr or clicking?

Some US owners have stripped the servo's down and reset & relubricated the noisy mechanism which has worked for them, although it is fiddly and time consuming. Is it something you feel you want to tackle yourself?

The only alternative may be to get a non-noisy second hand part which maybe more of a plug n play swap than taking the whole unit apart to fix. There are a few posts with pictures on the US CL site I can help you track down if you fancy some DIY!

Link to comment
Share on other sites

Thanks, but me and diy in any fashion is a no no. I will try and find someone who can assist me finding the faulty servo and replace it for me.

Let us know how you get on...

Good luck.

Link to comment
Share on other sites

Latest Deals

Lexus Official Store for genuine Lexus parts & accessories

Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via eBay links

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


Lexus Owners Club Powered by Invision Community

eBay Disclosure: As the club is an eBay Partner, the club may earn commision if you make a purchase via the clubs eBay links.

DISCLAIMER: is an independent Lexus forum for owners of Lexus vehicles. The club is not part of Lexus UK nor affiliated with or endorsed by Lexus UK in any way. The material contained in the forums is submitted by the general public and is NOT endorsed by Lexus Owners Club, ACI LTD, Lexus UK or Toyota Motor Corporation. The official Lexus website can be found at
  • Create New...