The VVT-I oil line on the 2005 Toyota Highlander is known to burst. This is a very large leak which covers the ground, engine, and undercarriage. If the oil line ruptures while driving, the low engine oil message and engine oil pressure warnings will illuminate. Continued use after these warnings will result in complete engine failure due to oil starvation. The line is known to be defective, and a revised part has been issued by Toyota, however, this revised part is known for the same issue. To repair the issue, the line must be replaced, and the engine bay and undercarriage must be cleaned thoroughly.
Sara D.
April 9, 2020
The oil leak in your 2005 toyota highlander may be due to a bad seal on the drain plug. Replacing the plug is relatively easy and shouldn't cost more than 40 to 50 dollars in parts.
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