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Dash Board out 1994 es 300

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Old 11-14-15, 05:41 PM
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1994lexus3
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Default Dash Board out 1994 es 300

Dash Board instrument panel goes out three 3 or 4 seconds after after turning on ignition switch. No gauges work, fuse is good. What is causing this?
Old 11-14-15, 06:00 PM
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hoopes999
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I'd bet on the ECU, They are all starting to die in these older es's. Or Maybe there is a bad connection at the back of the cluster. You might need a new one, i'd start by removing the cluster and checking the connections.
Old 11-14-15, 08:27 PM
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JetsonES
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There is a how to for replacing the capacitors in the older ecus, they go bad after a while.
Old 12-19-15, 03:08 PM
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1994lexus3
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Ok so bought a referb. dash board it lights up and worked for a while then I killed engine and it went out clicked switch several times and came back on. Then shut off and workedfine for several tries I could here relay coming on then it did not work and relay under glove box never clicked and all was off. You said the ECU is bad which one the car seems to have several. Which ECU do you think needs to be replaced needs to be replace?
Thank You
Old 12-19-15, 05:09 PM
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1994lexus3
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Is the ECU what fires the relay I am hearing click before dash lists up. If I hear no click the dash does not light up.
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