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S40 DSA switch S40-V40 2000

posted by  someone claiming to be Ark on  Sat Oct 28 04:56 CST 2000 [RELATED]

Driving US S40 for year.

Still can't figure out how DSA switch/light working.

My gueess:

- Normal start DSA light off. DSA ON?

- On slippery road DSA light flashing - DSA working?

- Press and hold DSA switch - light comes on and stays on -DSA is OFF?

Am I correct?

Manual is not clear about it.

Thanks







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    Re: S40 DSA switch S40-V40 2001

    posted by  someone claiming to be Steve Knapp on  Sat Oct 28 16:33 CST 2000 [RELATED]

    > Manual is not clear about it.

    Boy!

    My wife was test driving a V40 so I took the chance to quickly glance through the owners manual. From the description in the owners manual DSA is nothing more than traction control?!?

    I thought DSA was like "Active Handling", "ESP", or whatever you want to call some yaw sensors and all that.

    So which is it?

    Thanks!







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      Re: S40 DSA switch S40-V40 2001

      posted by  someone claiming to be Arno Griffioen on  Sat Oct 28 22:38 CST 2000 [RELATED]

      DSA only limits the amount of wheelspin it detects (using the ABS sensors) by reducing torque from the engine (shutting off injection cycles).

      It is *not* a stability-control system like ESP on the MB's or DSTC on the big Volvo's.

      Bye, Arno.







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        Re: S40 DSA switch S40-V40 2001

        posted by  someone claiming to be Steve Knapp on  Sun Oct 29 16:54 CST 2000 [RELATED]

        > DSA only limits the amount of wheelspin it detects (using the ABS

        > sensors) by reducing torque from the engine (shutting off injection

        > cycles).

        So how does it differ from TRACS? My brochure says the V40 has TRACS *and* DSA. DSA sounds like traction control.

        Or perhaps the better question is, does DSA help on snowy and icy roads?







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          Re: S40 DSA switch S40-V40 2001

          posted by  someone claiming to be Arno Griffioen on  Sun Oct 29 18:35 CST 2000 [RELATED]

          > So how does it differ from TRACS? My brochure says the V40 has TRACS

          > *and* DSA. DSA sounds like traction control.

          True.

          Difference is that TRACS only works in very low speeds (eg. taking off) and it controls wheelspin by applying a brake on the wheel which is spinning. DSA functions across the whole speed range.

          TRACS is probably a bit better at preventing wheelspin at low speeds because it can brake the actual spinning wheel, while DSA only reduces power output.

          Bye, Arno.







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    Re: S40 DSA switch S40-V40 2000

    posted by  someone claiming to be Dave the Volvo Tech on  Sat Oct 28 06:24 CST 2000 [RELATED]

    Ark-

    You got it.






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