What Causes the BMW 2 Series’ Transmission Warning Light to Turn On?

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What Causes the BMW 2 Series’ Transmission Warning Light to Turn On?

The “Transmission Malfunction” warning can appear due to fluid issues, overheating, o r sensor failures. How can owners diagnose and fix it?

Garitips asked on 14 Feb 2025 12:42:47 pm

1 Answer

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Garitips - on 14 Feb 2025 12:46:14 pm

The “Transmission Malfunction” warning light can indicate a serious issue requiring immediate attention.

✅ Possible Reasons:

Low Transmission Fluid Pressure – If fluid levels too low, gears won’t engage properly.
Transmission Control Unit TCU Failure – Faulty electronics may cause gear selection issues.
Overheating Transmission – When the transmission gets too hot, it may enter limp mode to prevent further damage.
Faulty Transmission Sensors – A defective speed sensor o r pressure sensor can send incorrect signals to the transmission.
🔹 How to Fix It:

Use an OBD-II scanner to check for error codes P0700, P0730, etc..
Inspect transmission fluid levels and change if necessary.
Reset the Transmission Control Unit TCU if software-related issues are suspected.
If overheating is detected, let the transmission cool down and check the cooling system.