Should I switch on my Ford Mondeo's heated windscreen and rear window to improve engine braking?

Although my Ford Mondeo has a traction control switch to assist roadholding in icy conditions, I have found as an additional measure, when driving on particularly icy and ungritted sideroads, that switching on both the heated windscreen and the heated rear window produces additional engine braking, so that hills and icy sloping corners become even more safe. Used for a short period only, when required, has negligible effect on either fuel or battery.

Asked on 24 December 2010 by SL, London NW9

Answered by Honest John
The traction control button switches OFF the traction control. It does not switch it on. The additional engine braking is from the additional load on the alternator that imposes an additional load on the engine.
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