BMW 135i Transmission Cooler Replacement DIY (2008-2013 BMW E82 & E88 135i & 135is)

►BMW's DCT transmission has proven to be one of the most reliable dual-clutch gearboxes, and that's thanks to its transmission cooler. That reliability is partially due to its transmission oil cooler, ensuring the internal fluids stay within their optimal temperature range. If you find that your DCT is getting hot, you may need to replace your transmission cooler.

The trans cooler is a heat exchanger, passing the DCT fluid through tubes surrounded by colder engine coolant. The cooler will weaken over time and can even begin to leak, causing problems for the cooling system and transmission. Replacing the trans cooler is fairly straightforward and won't require any special tools. Just grab the right fluids from FCP Euro, and you're all set.

In this video, Gareth Foley, FCP Euro's BMW Expert, replaces the DCT trans cooler on a BMW E82 135i.

00:00 - Intro
01:40 - Tools Needed
02:45 - Radiator Fan Removal
04:25 - Draining the Coolant
07:15 - BMW 135i E82 N55 Transmission Cooler Replacement
13:26 - Buttoning the Cooling System Back Up
19:05 - Radiator Fan Install
21:54 - Wrap-up

Shop the parts used in this video:
BMW 135i E82 N55 Transmission Cooler: https://www.fcpeuro.com/products/1683...

This video applies to the following vehicles:
BMW 135i
2008 BMW 135i Auto Trans Oil Cooler
w/ Sport automatic gearbox (S2TBA) or Automatic transmission (S205A)
2009 BMW 135i Auto Trans Oil Cooler
w/ Sport automatic gearbox (S2TBA) or Automatic transmission (S205A)
2010 BMW 135i Auto Trans Oil Cooler
w/ Sport automatic gearbox (S2TBA) or Automatic transmission (S205A)
2011 BMW 135i Auto Trans Oil Cooler
w/ Sport gearbox with twin clutch (S2TCA)
2012 BMW 135i Auto Trans Oil Cooler
w/ Sport gearbox with twin clutch (S2TCA)
2013 BMW 135i Auto Trans Oil Cooler
w/ Sport gearbox with twin clutch (S2TCA)

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