Traction control - why the comedy noises

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
kieronf

kieronf

New Member
Posts
223
Location
Holsworthy, Devon
I would me most grateful if someone could find the time to explain the actual mechanics of the traction control. When mine operates it is accompanied by a click and what can only be described as a comedy spring/rattle noise.

I entertained several people with all the racket in the icy supermarket carpark today but would feel more comfortable knowing what all the sound effects actually mean.

Cheers
 
If I wasn't simply reversing from a parking bay when it happens I could understand your point. Sometimes it will cut in at snails pace.

All said, if anyone can explain the mechanics that accompany the sounds I would be grateful
 
kieronf said:
I would me most grateful if someone could find the time to explain the actual mechanics of the traction control. When mine operates it is accompanied by a click and what can only be described as a comedy spring/rattle noise.

I entertained several people with all the racket in the icy supermarket carpark today but would feel more comfortable knowing what all the sound effects actually mean.

Cheers
Click to expand...

Traction control works in exactly the opposite way to ABS. Traction control, when it detects a wheel revolving faster than the others, puts the brake on that wheel to divert drive to the ones with grip. ABS works in the opposite sense. When it detects a wheel revolving slower than the others it pulses the brake on and off to stop it from skidding.
 
Not sure what the crack noise is but the other noise that you are hearing are the electric solenoid valves in the brake modulator. These valves regulate the brake pressure to each of the brake calipers and they can easily be heard in both ABS and TC modes. The valves cycle rapidly to achieve the right pressure at the calipers. Its probably noisier inside the car than outside because the modulator unit is mounted on the bulkhead, so noise is transmitted easily into cabin. More modern vehicles have the modulator mounted nearer the front of the car to stop the noise being heard inside the cabin.
 
You must log in or register to reply here.

Similar threads

hd3
Why Injectors Fail and ..
Replies
5
Views
4K
hd3
hd3
Back
Top