Enable-Feature.ps1

#region Variables
$siteUrl = "http://sharepoint2013/organization/Nav_Rep_WithoutVariation_De" 
$featureID = [GUID]("xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx")
#endregion

#region Add references to SharePoint client assemblies - required for CSOM
Add-Type -Path "Microsoft.SharePoint.Client.dll"
Add-Type -Path "Microsoft.SharePoint.Client.Runtime.dll"
#endregion

$context = New-Object Microsoft.SharePoint.Client.ClientContext($siteUrl)
$context.ExecuteQuery()
$web = $context.Web
$context.Load($web)

Try
{
    $siteFeatures = $context.Site.Features
    $context.Load($siteFeatures)
    $context.ExecuteQuery()

    $siteFeatures.Add($featureID, $true, [Microsoft.SharePoint.Client.FeatureDefinitionScope]::None)
    $context.ExecuteQuery()

    Write-Host "Feature '$featureID' successfully activtated by '$siteUrl' "
}
Catch
{
    Write-Host "No activated by '$item.Name'" 
}
Read-Host "Press enter key to continue"