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How do I change the radiator cooling fan on my rx 400h

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By taking it to the dealer. the rx400 is a complicated machine and in some cases very dangerous. if you grab the wrong wire you could have 220v of electricity run through your body and kill you. for things like this you would need to disable the hybrid powertrain via the service plug on the hybrid battery(in the trunk) then take the radiator support off, remove the horn wire harness, unplug the fan controller, move the wire harness out of the way, remove the upper radiator hose, unbolt the 4 10mm bolts holding the fan shroud in place and pull out the fan assembly. be cautious of the orange and yellow wire looms, yellow is the airbag harness and orange is the high voltage harness.

Posted on Oct 08, 2009

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Posted on Jan 02, 2017

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My2007 lexus 400h has a high pitch whine when accelerating at high speeds and goes away when I take my foot off the gas


Either a failing transmission or something
in the hybrid system, not right

Doubt the dealer has anyone trained to work on a hybid

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How do I reset the maintenance msg on a 2007 Lexus RX 400H?


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I add diesel in petrol engine (Rx 400h) and started driving. Now it doesn't fire the engine. What should I do now?


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we have read your problem and understood that your engine is not starting now.please call a local repairman to drain all the diesel and clean the engine carburetor using petrol only.

i make it clear that the engines for petrol and diesel are totally different since the chemical combination of the liquids are also different.they are different like chilli sauce and tomato sauce.diesel cannot be used in petrol engines since they are designed to burn only petrol.i believe you have understood the facts and the differences between the engines of petrol and diesel.thank you, have nice day

Feb 11, 2010 | 2008 Lexus Rx 400h

1 Answer

Hi.i would like to know how many spark plus use in my RX400h,because i would like to change them but i just can finded 3 spark coil thanks


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With the engine cover removed you will see the front row and there will be 3 more near the firewall.
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1 Answer

13b turbo rx7 S6 overheating after we replaced the twin fans and Radiator and thermostat


Make sure you use new coolant with this process. Dexcool is recommneded only Because the maintanance Interval is more than 100k miles.
Are the fans Switching on when the vehicle reaches Operating tempurature?
Do you use Higher viscosity oil for the engine, and allow for the trubo to cool off after hard runs?
Did you install the Thermostat correctly.
Most likely it might be the Coolant, Do not use pure water for cooling. It will evaperate eventaully even with a hihger psi radiator cap.

Jul 16, 2009 | 1987 Mazda RX-7

2 Answers

Radiator replacement


  1. Remove air cleaner and duct assembly.
  2. Drain the coolant.
    1. Remove the engine mount struts.
    2. Remove the cooling fans with the cooling fan shroud.
    3. Remove the radiator upper hose from the radiator.
    4. Remove the radiator lower hose from the radiator.
    5. Disconnect the transaxle oil cooler lines from the radiator.
    6. Remove the radiator brackets and bolts.
    7. Remove the radiator. Installation Procedure
    1. Install the radiator. Notice: Refer to Fastener Notice in Service Precautions.
      1. Install the radiator brackets and bolts.
        • Tighten the bolts to 24 Nm (18 ft. lbs.) .
      1. Connect the transaxle oil cooler lines to the radiator.
      2. Install the radiator upper hose to the radiator.
      3. Install the radiator lower hose to the radiator.
      4. Install the cooling fans with the cooling fan shroud.
      5. Install the engine mount struts. Notice: When adding coolant, it is important that you use GM Goodwrench DEX-COOL (R) or HAVOLINE (R) DEX-COOL (R) coolant. If Coolant other than DEX-COOL (R) or HAVOLINE (R) DEX-COOL (R) is added to the system the engine coolant will require change sooner; at 50,000 km (30,000 mi) or 24 months.
      6. Fill the cooling system.
      7. Install the air cleaner and duct assembly.

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