MercedesBenz W211 EClass Heater Valve Replacement

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=C2NqH1je2TQ

Mercedes-Benz W211 models are equipped with a climate control system or HVAC, which automatically controls cabin temperature once a temperature is set on the HVAC control head in the center dashboard. Left and right (passenger and driver) temperature settings are controlled separately. The system controls air-conditioning, heating, internal blower motor operation and numerous air outlets. The electronic control module governs the operations of the following components: • Heater valve in the center of the engine compartment; controls the flow of hot coolant to the heater core inside the HVAC housing underneath the center dashboard • AC compressor in the engine compartment; driven by engine accessory belt • Blower motor underneath the dashboard behind the glove compartment; motor speed modulated using the blower final stage • Front and rear air outlets; nearly a dozen electric stepper motors attached to vent flaps control the flow of fresh or recirculated cold and warm air to windshield, face-level vents, foot wells and rear compartment • Engine cooling fan; microprocessor and engine control module (ECM) determine operation and speed of cooling fan • The heater control valve controls the flow of hot coolant to the heater core. If your vehicle has no heat and the cooling system is properly bled, the valve may be faulty (stuck closed). You may also have a situation where the vehicle has heat all the time. This may be a valve that is stuck open. In this tech article, I will show you how to replace it if necessary. Aside from mechanical failure, the heating problems in your car may also be caused by a malfunction in the electronics of the climate control system. A dedicated Mercedes-Benz scan tool can read fault codes off the HVAC system. But I'll show you some simple tests of the system that you can do using a DVOM. • To do any work on the cooling system, wait until the engine has cooled off. • Keep in mind that when your car was serviced before, parts may have been replaced with different size fasteners used in the replacement. The sizes of the nuts and bolts we give may be different from what you have, so be prepared with different size sockets and wrenches. • Protect your eyes, hands and body from fluids, dust and debris while working on your vehicle. If you're working with the electrical system, disconnect the battery before beginning. Always catch fluids in appropriate containers and properly dispose of any fluid waste. Recycle parts, packaging and fluids when possible. Do not work on your vehicle if you feel the task is beyond your ability. • Vehicle models change and evolve, as they grow older, so the vehicle shown in our illustrations may vary slightly from yours. If something seems different, let us know and share your info to help other users. Do you have questions or want to add to the article? Leave a comment below. When leaving a comment, please leave your vehicle information. • Drain the cooling system. See our tech article on cooling system draining and filling. • Read the Full Article here: https://www.pelicanparts.com/techarti... • Time: 2 hours • Tab: $100 • Tools: T30 Torx socket:https://www.pelicanparts.com/Mercedes..., 13mm socket:https://www.pelicanparts.com/Mercedes..., flathead screwdriver:https://www.pelicanparts.com/Mercedes..., hose clamp pliers:https://www.pelicanparts.com/Mercedes... • Applicable Models: • Mercedes-Benz E320 (2003-09):https://www.pelicanparts.com/catalog/... • Mercedes-Benz E500 (2003-06):https://www.pelicanparts.com/catalog/... • Mercedes-Benz E55 AMG (2003-06):https://www.pelicanparts.com/catalog/... • Parts Required: Heater valve:https://www.pelicanparts.com/catalog/..., heater hoses:https://www.pelicanparts.com/catalog/..., engine coolant:https://www.pelicanparts.com/catalog/... • Hot Tip: Work with a cool engine • Performance Gain: Heat will work again • Complementary Modification: Change thermostat:https://www.pelicanparts.com/techarti..., flush cooling system:https://www.pelicanparts.com/techarti...

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