Oi Rodrigo
O código que você postou ficaria assim:
<StackLayout Padding="5">
<TableView Intent="Settings" >
<TableRoot>
<TableSection Title="Acessórios">
<ViewCell>
<StackLayout Orientation ="Horizontal" >
<Label Text="{Binding TextoFreioABS}" HorizontalOptions="StartAndExpand" VerticalOptions="Center" Margin="10, 0, 0, 0" FontSize="Micro"/>
<Switch IsToggled="{Binding TemFreioABS, Mode=TwoWay}" HorizontalOptions="End" />
</StackLayout>
</ViewCell>
<ViewCell>
<StackLayout Orientation ="Horizontal" >
<Label Text="{Binding TextoArCondicionado}" HorizontalOptions="StartAndExpand" VerticalOptions="Center" Margin="10, 0, 0, 0" FontSize="Micro"/>
<Switch IsToggled="{Binding TemArCondicionado, Mode=TwoWay}" HorizontalOptions="End" />
</StackLayout>
</ViewCell>
<ViewCell>
<StackLayout Orientation ="Horizontal" >
<Label Text="{Binding TextoMP3Player}" HorizontalOptions="StartAndExpand" VerticalOptions="Center" Margin="10, 0, 0, 0" FontSize="Micro"/>
<Switch IsToggled="{Binding TemMP3Player, Mode=TwoWay}" HorizontalOptions="End" />
</StackLayout>
</ViewCell>
<TextCell Text="{Binding ValorTotal}"></TextCell>
</TableSection>
</TableRoot>
</TableView>
<Button x:Name="btnProximo" Text="Próximo" Clicked="BtnProximo_Clicked" VerticalOptions="End"></Button>
</StackLayout>