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2003 Mercedes-Benz S430 4.3L Compressor
Posted to European HVAC on 7/13/2012 3 Replies

Mercedes tech please help! AC off button is inop, compressor will not engage. Self test on control head relays KLA A ERR 1257. I can not find code descriptions. Any info will be greatly appreciated!

FIX posted 7/14/2012

3 Replies Received (View Replies)

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2003 Mercedes-Benz S430

VIN WDBNG70J83
Engine4.3 L / 8 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection
AffectedCompressor
ConditionsNot Engaging Pressure Valve