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What's the difference between TCS and ESP?

Discussion in 'Leon Mk1 (2000-2006)' started by mikeholroyd, Aug 19, 2011.

  1. mikeholroyd

    mikeholroyd Guest

    A colleague's Leon has a button behind the fuel release switch which is marked TCS. The switch in the same place on my TDI is marked ESP.

    Is this just a differently marked switch, or are they 2 totally different concepts?

    Reason I ask is that on both, the same amber warning light shows on the dash when the switches are pressed, and it seems that the result of switching the systems off is the same for both.

    Can anyone throw any light on this please?

    In the next few days, I will be retrofitting cruise to my TDI, does the ESP button/system cause any problem or additional work when fitting?

    Thanks

    Mike
     
    #1 mikeholroyd, Aug 19, 2011
    Last edited by a moderator: Aug 19, 2011
  2. Dabbalz

    Dabbalz Active Member

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    Is their Leon older?
    If so, did older ones have only traction control but not stability control also?
    Thats all I can think of!
     
  3. mikeholroyd

    mikeholroyd Guest

    No, my mates with TCS is a 53 plate Cupra petrol. Mine with ESP is an 02 plate TDI 110 diesel.

    Mike
     
  4. Darren7887

    Darren7887 Darren7887

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    Traction control system governs wheel spin an loss of grip only, electronic stability control also help protect against side to side movement eg. understeer and oversteer. so if u stack it mid corner ESP saves ya life TCS does not! thats how it was explained to me anyhows. can only thing there diff because ones diesel an ones petrol?
     
  5. mikeholroyd

    mikeholroyd Guest

    Hmm. I would have thought that a petrol Cupra, as more a sports car than a bog standard diesel, would have had the system to protect from under/oversteer, and that the diesel would have had the "lesser" system

    So, does anyone know if ESP causes issues on the cruise retrofit, and how to solve these problems if they occur?
    Mike
     
  6. Muttley

    Muttley Catch that diesel!

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    TCS is plain traction control. Only works when you're under way, so not a launch control. Limits power transfer to the unloaded wheel on corners or slippery surfaces, by applying braking force ( using the ABS system) to that wheel.

    ESP incorporate an additional set of sensors, for steering angle (where do you want to go) lateral and lontitudinal acceleration (where are you actually going) and does its best to correct your errors by a combination of wheel braking and cutting the power. If you modify your car outside of standard spec (by remap or even just by changing wheel diameters) ESP can be confused and cut in more harshly.
     
  7. Allan_84

    Allan_84 Active Member

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    No that is not correct, the system that you are talking about that use the brakes is EDL/EDS (Electronic Differential Lock / Elektronische DifferenzialSperre).

    TCS (ASR) Traction Control System (AntriebsSchlupfRegelung/Anti-Slip Regulation), use the ABS wheels sensors to detect if one or both front wheels is spinning and then limits the power out put of the engine.
     
    #7 Allan_84, Aug 20, 2011
    Last edited: Aug 20, 2011
  8. traumapat

    traumapat Leon Cupra IHI

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    ESP was standard until sometime in 02 then they fitted the cheaper TCS. Dont get carried away on the sports car bit, our passat also has ESP and its a 110tdi estate :lol:
     
  9. Allan_84

    Allan_84 Active Member

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    i have a 180bhp leon sport with TCS, car is from 01.!?
     
  10. traumapat

    traumapat Leon Cupra IHI

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    may have been a cupra thing? mines 01 with ESP? maybe it was an option withdrawn in 02 :think:

    Edit .. uk thing probably
     
  11. tehguy

    tehguy Active Member

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    Plain and simply TCS (traction control system) is designed to prevent wheelspin. Electronic Stability Program (ESP) is designed to assist the driver in stabilising the car in situations where understeer and oversteer occur.

    TCS uses the ABS wheel speed sensors to judge when one or more wheels are spinning significantly faster than the other wheels and will normally control this by either retarding the spark, closing the throttle, stopping fuel from being injected etc. In some systems such as VW's Electronic Differential Lock (EDL, also called XDS on Seat cars) if the car sees only one of the front wheels spinning it will apply the brake to just that wheel, which forces the differential to apply the torque to the wheel with best grip.

    ESP adds more sensors to determine steering angle, lateral acceleration, yaw rate in order to determine if the car is going in the direction that you want it to. If it detects understeer it will brake the inside rear wheel and if it detects oversteer it will brake the outside front wheel.

    ESP is the best thing to have, although since TCS is a part of it, you can't have ESP and not have TCS.
     
  12. mikeholroyd

    mikeholroyd Guest

    OK, thanks guys.

    Mike
     
  13. tehguy

    tehguy Active Member

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