On the W210 chassis due to evaporator design....when the system is low on refrigerant the drivers side will be warmer..have some refrig added OE even better have the refrig recovered & weighed to see how low it was & then recharge & leak test.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
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44 years foreign automotive repair
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190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
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