I have purchased a 1.8T L&K Sept 2001. It has an ASR button on the Dash. How can I tell if the car has ESP?

Will

I think ESP only comes on the 4x4...

Rob.

:yes:

If it's labelled as ASR, it's ASR, in the UK ESP only comes on the 4x4 and WRC anniversary.

Can someone explain in detail how and when the diff brake works?

Is it only up to a certain speed and from then only ASR?

Does it modulate the brake action and move from wheel to wheel or just

a quick stab and if that wasn't enough let the ASR system reduce torque?

/Eric

Eric, the following thread might just cast some light on this subject for you:

http://www.briskoda.net/phpBB2+viewtopic-t-447-highlight-0.html

Failing that, the Owner's Manual describes the operation of TCS, ABS, EDL and ESP on pages 74-75, 78-80 and 113-114.

This thread is also worth a read:

http://www.briskoda.net/phpBB2+viewtopic-t-260-highlight-0.html

Thankyou, I think I read those treads before.

But by your description ASR and EDL are active at the same time?

I only get the bangs from EDL in first gear and very low speed.

If I use too much trottle out of a faster turn I dont hear/feel anything,

only the engine power is reduced and the light flashes.

/Eric

EDL

The electronic differential lock continually compares the rpm of the drive wheels, and if it identifies a difference between them which could lead to an individual wheel spinning, for example if the two wheels are on different types of surface or accelerating on wet leaves, the system brakes the wheel affected until uniform rpm of all drive wheels is restored.

ASR

ASR traction control ensures the Octavia's stability when pulling away or accelerating. If the engine power or torque being transmitted to the drive wheels is too great, eg on a slippery road surface, engine torque is automatically reduced until optimum road-holding returns, thus preventing wheelspin. A light indicates whether the ASR system is on. It can be manually switched off.

The TCS (ie ASR) is active all the time unless switched off. In the situation which you describe, Eric - namely accelerating around a faster corner using too much throttle - the TCS detects slip affecting both wheels and reduces engine power accordingly. But if at the same time you were to put one driven wheel onto a different surface and induce further wheelspin on that wheel, the EDL should intervene as well. At this stage throttle reduction, braking on one wheel, and power transfer via the EDL would all be involved. Whether or not you would stay on the road is another matter! There must be vRS owners out there who can confirm or correct my understanding.

I think that the ESP which is fitted to the 4x4 is much more subtle in operation. Maybe Colin could confirm that?

The TCS (ie ASR) is active all the time unless switched off. In the situation which you describe, Eric - namely accelerating around a faster corner using too much throttle - the TCS detects slip affecting both wheels and reduces engine power accordingly. But if at the same time you were to put one driven wheel onto a different surface and induce further wheelspin on that wheel, the EDL should intervene as well. At this stage throttle reduction, braking on one wheel, and power transfer via the EDL would all be involved.

I think that the ESP which is fitted to the 4x4 is much more subtle in operation. Maybe Colin could confirm that?[/quote:f943fa9f34]

This is my understanding of ASR, MSR, EDL and ESP.

All of the above are carried out electronically by either braking wheels or reducing engine power, including ESP. Transference of power would indicate more of a mechanical feature ie LSD (Limited Slip Differential).

Skoda may wish to play with words in publicizing ASR and ESP but primarily they are the same. On the 4X4 ESP works on all four wheels as a brake control system.

Think I best go get my tin hat.

PS Now the Haldex-Clutch on the 4X4 thats a whole different ball game.

ESP, technical descriptions..ba

Remember when you had dinky cars you used to move with your hand...thats ESP, the hand. Throw the car into a corner covered in goo, turn and you know the back should cut loose. ESP brakes and the haldex squirts power around and voila you have the dinky hand taking you around the corner. It's very subtle in its operation. Only really pushing on into the envelope of physics and breaking laws thereof do you feel any "violent" wizardry. The side effect I find is your instincts feel something and you go to counter, ESP beats you to it and you essentially overcorrect.

Hope that helps, always willing to give the keys (*Jon excluded*) for folk to feel it...it has to be felt, it can't be explained, it just can't.

ESP, technical descriptions..ba

Remember when you had dinky cars you used to move with your hand...thats ESP, the hand. Throw the car into a corner covered in goo, turn and you know the back should cut loose. ESP brakes and the haldex squirts power around and volia you have the dinky hand taking you around the corner. It's very subtle in it's operation. Only really pushing on into the envelope of physics and breaking laws thereof do you feel any "violent" wizzardary. The side effect I find is your instincts feel somthing and you go to counter, ESP beats you to it and you essentially overcorrect.

Hope that helps, always willing to give the keys (*Jon excluded*) for folk to feel it...it has to be felt, it can't be explained, it just can't.[/quote:01666e3670]

:yes:

Eric and Colin have explained the EDL and ASR function very well.

I'd agree also with Colin, that by the time you "sense" something the ASR or EDL has already fixed it...so you continue to drive on. So much for your "quick reactions".... Colin McRae or Michael Shumacher, I'm not....

I've had the EDL work only at very slow speeds and it does "clunk" a tiny bit when it works. It will "pull" you right out of a bunch of snow as it alternates from side to side to "chew" its way up to speed. The mechanical ones I've seen on rear wheel drive cars also make noises and (like my friend's Honda 2000 roadster) will dramatically "wag" their way up the hill as it pushes one way and then the other. Kind of spooky!!!

I really like the ASR. It works like a champ!!! We've had a bit of snow here in Maryland over the last couple months and on the occasions I've had to be out, its worked very well to get me "home." I did pass a quartet of cars struggling up a hill during a January storm with nary a problem. Just kept a steady speed and let the ASR work out the "details" of getting traction. (One of the cars passed was a "grosser" Mercedes or 7 Series (the ultimate driving machine) Bimmer. Talk about feeling smug!!!)

Also, the ASR has worked once in awhile when one wheel is on ice at a steady driving state. Pretty slick...you wouldn't know that one wheel is spinning....and blinky-blink the ASR works and goes to sleep. You are left with that "what was that?...why was that?" kind of feeling as your reflexes are too slow to respond to it.

I can't wait to get the ESP on the my next Beetle. Another friend has an AUDI A4, 1.8 Turbo, Quatro sedan. He's said that the ESP on his AUDI is just amazing.

Good discussion, Guys.... sorry have to run...another snow storm is on the way...

Nice description colin - knew I should of copyrighted the"hand of god" theory!

The main time it "beats me to it" is pulling sharply out of side turnings when wet \ greasy, as you give it some lock and some gas and ESP tries to give you a U turn back into the road you are pulling out of.

I tend to turn ESP off for that, then give plenty of throttle out, a touch of opp lock and a 4wheel drift till lined up with the road, then back off \ change up and ESP back on.

(hooligan? me? :yes:)

(oh, and for U turns on wet roads it is possible to get the haldex to throw too much power to the back and flick the rear round, but you have to be ready for it)

(*Jon excluded*) [/quote:382d9eb35e]

Is it cos I's a RS owner?

:mrgreen:

/Hijack mode on.

No Jon, Just a friendly poke...actually your one of the folk I would like to drive it, see if you can fathom out it's feel on the road etc etc

/Hijack mode off.

I don't know when it's ESP, EDL or haldex which for me as a driver is great, I really doubt the everyday joe who has TC will ever see the TC lights except on pulling off, but then the haldex just squirts everything backward so you get no wheel spin, I'm a bit sad really as I've not had a any wheel spining moments when pulling off since August 02, it's that dam good.

Is it true that ESP stands for "Enjoyment Spoiled Persistently"?

:mrgreen:

Anti-hijack mode disabled

Mr Green with Envy - Is it true that ESP stands for "Enjoyment Spoiled Persistently"?

No! ESP = extreme sensory pleasure which is all part of the 4X4 turbo experience.....

:wave:

Anti-hijack mode enabled

Is it true that ESP stands for "Enjoyment Spoiled Persistently"?

:mrgreen:[/quote:883eab1fae]

Yes that is correct (hey its in the owners manual!).

And ASR stands for 'A Stupid Restrictor'...

I don't have ESP . But I'm still not convinced that EDL is

active at higher speed. I mean, when you are at the limit

of adhesion in a corner and the inside front wheel loses traction,

to brake that wheel would probably spin the car. Everybody knows

that you don't lift off or brake in that situation.

Last week a BMW passed me in high speed right before a 270 degree

ramp and I decided to show him so I didn't slow down much for

the corner. Mid corner the rear stepped out but I catched it with a

quick steering correction. The road was dry but I have studded

winter tyres and he probably had much wider unstudded.

It was the first time I slided at speed without knowing/provoking it beforehand.

I really feel that the RS is very neutral and predictable at the limit,

it doesn't understeer like most front drive cars.

And ASR stands for 'A Stupid Restrictor'...

Funny I thought ASR stands for "Airborne sump retriever".