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Check engine - ECU PTCU powertrain

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Old Feb 21, 2026 | 12:25 PM
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EL-34
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2022 GLE 450
Check engine - ECU PTCU powertrain




The check engine light came and went. What is this?
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Old Feb 23, 2026 | 01:59 PM
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EL-34
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2022 GLE 450
The problem was the actuated valve for the exhaust. It got stuck during cold weather.
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Old Feb 23, 2026 | 06:50 PM
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2014 C300 Sport / 2022 GLE 450
Originally Posted by EL-34
The problem was the actuated valve for the exhaust. It got stuck during cold weather.
I had this happen once as well in cold weather. It went away on its own and I haven’t seen it since.
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