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No heat on my lexus is300 02 - Cars & Trucks

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What's the best way to heat my 2004 Lexus RX 330


I have an ES330.

In cold weather you have the AC button off. The Auto button heats (and in summer cools) the vehicle automatically. You just adjust the temperature up or down. Mine is set to 23'C. Then you can select Manual Settings, where the heat or cold comes from and the fan speed. There is also a Windscreen defrost setting which only blows to the windscreen.

Your manual is here

SECTION 2 - AIR CONDITIONING AND
AUDIO
The features of the vehicle's air conditioning and audio are
explained in detail.
Be sure to read this Section so that you can
make full use of them

2004 Lexus RX 330 Owners Manual

or

Owner's Manual, you can get from lexus.com. Sign up as a Lexus Owner and you can download the Owner's Manual.

Nov 27, 2017 | Lexus Cars & Trucks

2 Answers

Passenger seat heater doesn't work on lexus es300


The heater its self needs to be replaced in the seat

Dec 28, 2011 | 1998 Lexus ES 300

2 Answers

The engine light and VSC light are on (Vehicle Singapore 2004 Lexus RX 300. Diagnostics report Error code P0037


your o2 sensor is bad. vsc will go on for any small DTC displayed on the MIL (cel)

P0037 LEXUS P0037 LEXUS - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
Possible causes - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM) When is the code detected? The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit P0037 LEXUS Description Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECMcontrols the heater element circuit by allowing current flow to ground.

The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

o2_heater_circuit.gif

Mar 14, 2011 | 2004 Lexus RX 330

1 Answer

Heater doesn't work with my 2000 Lexus RX 300. a/c works fine but no heat even when I set the temp to 75 or higher


Possible air bubble trapped in the HVAC unit so the heat from the engine is not getting to the heat exchanger

Apr 16, 2010 | 1999 Lexus RX 300

1 Answer

Lexus is350 heating system malfunction


each dual heating control controls an actuator for a door to open and close may havea bad actuator motor for the passenger door should take to a shop where they can get body codes out of the system after market parts places like autozone cannot pull these codes most repair places can

Dec 30, 2009 | 2007 Lexus IS 350

3 Answers

Car blows extreme heat inside car is not over heating


On my 93 lexus ls 400, the heater control valve is gone and was bypassed.
It mounts to the firewall under the hood. if it needs to be replaced your car will blow only heat

Aug 27, 2009 | 1993 Lexus Ls 400

1 Answer

1992 Lexus SC400 No Heat, AC, Defrost (mode controls)


Change the 15amp fuse in the kicker fuse panel labeled cig. My stopped working for the same reason.

Feb 20, 2009 | 1992 Lexus Sc 400

1 Answer

No heat in my 1995 lexus 3000


if the engine is not getting up to temp icould be the stat if thats not the problem it could be an airlock

Nov 21, 2008 | 1995 Lexus GS 300

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