560SEL Check engine light
I have a 1989 560SEL and the check engine light came on. It stays on all the time regardless of engine temperature. No other symptoms and all runs well. Any ideas? Thanks.
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Check the oxygen sensor.
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Thanks I'll check it and report back.
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There is no check engine light in the 560SEL 1989. If so, where is it located?!!!
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It's on the instrument cluster. That row of warning/status lights. Turn key to position 2 and they all light.
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What sort of mileage interval should we change these at?
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I checked all of the instrument cluster and no check engine light was there!
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Mine just says O2 Sensor on the far right...
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I checked the 02 sensor and I believe it is ok. It checks at around 6 ohms. The car runs fine and is getting normal gas mileage.
I disconnected the battery and re-connected. Afterward the check engine light did not come on and has not since. I accidently disconnected a vacuum line on a valve the is connected to the exhaust manifold several years ago and the check engine light came on. Perhaps this valve is getting old and may be failing. |
I have to say, reading all of your replies; You all need to find a good reliable Mercedes Shop. Have the codes read by someone who knows what they are doing. I would not recommend just driving it with the light on. Is it a CA car, grey market, Federal?
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