It is making noise and since it operates only for the first 45 seconds , will it hurt the car to disconnect it? I already spent $1100 for a new one for the 300 and now the 420 needs one, but was told I can do without.

Opinions please.

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'89 420 SEL
'90 300 SEL
'68 Olds 88 Convertible
'84 300 SD (sold it)