Mercedes Climate Control Problems
To get more information about other Mercedes climate control problems, below are common questions answered by Experts.
How can the climate control unit from a 500SL (1992 model) be removed?To remove the Mercedes climate control on the 500 SL, first the radio should be removed. There are two locking lugs which lock the climate control unit in position. These should be pried out to allow the climate control to slide forward. There are two wire clusters which need to be disconnected. These wires would have slide locks on the plugs which need to be slid back to allow the plugs to be lifted out.
Could a climate control issue cause a 1991 420 Benz to reduce the fan speed when it reaches the set temperature? ? When the control is switched off and on, heating resumes.This could be a Mercedes climate control problem. Replacing the push button assembly or climate control module may help in this situation. Then check the auxiliary water pump to see that it is running and if the heater valve clicks when energized. There are four small screws at the top portion of the heater valve to be removed in order to inspect the rubber diaphragm. If this has a hole in it, it should be replaced. If this does not help the car temperature sensor or aspirator blower may require professional intervention. The temperature fluctuations may be a faulty temperature actuator inside the dashboard. This replacement is an involved job requiring the entire dashboard removal and is not related to a Mercedes climate control unit failure.
Why doesn’t the Mercedes Benz climate control turn on completely (the fan does not blow strong enough)?Prior to opting for any climate control repair, a specific diagnosis would be required. When the blower motor is turned on at maximum speed the display on the AC panel should be checked. If it indicates the speed is increasing though it actually does not, there may be a need for repair. A new blower motor, blower regulator or both may be needed. A blower motor usually comes equipped with a regulator. If just the regulator is required, it can be purchased separately. Through specific testing at the blower motor one will be able to determine the exact component that is defective.
Why would the Mercedes Benz climate control on the S500 continues to blow air even with the key off?This could be a problem related to the control panel. There could be fault codes stored here which need to be retrieved and tried to be erased. Apart from this all the fuses need to be inspected and the heater valve can tried to be disconnected. This is done to see if the Mercedes climate control problem alleviates in any manner.
Can the Mercedes climate control cluster on the 1992 SL500 be reset, it seems to be frozen at automatic, with no other button responding?The Mercedes Benz climate control does not have any factory reset available. An action similar to a reset would be to disconnect the negative battery cable for 10 minutes. Then reconnect it to check if the panel becomes functional again. If the panel freezes or the entire panel is locked out, most likely the panel itself is faulty. Therefore if the reset is not helpful, a working Mercedes climate control panel should be fitted to test the system. In case the problem is unable to control the blower speed, the problem could be a shorted electronic blower controller. This is mounted underneath the blower motor.
Mercedes climate control can play an important role in a vehicle. M It maintains a predetermined, consistent temperature and atmosphere within a vehicular cabin. When faced with climate control problems, address them to prevent an uncomfortable environment within the car. The Experts can be of assistance to provide insight and expertise on questions related to Mercedes Benz climate controls.