Common problems with the Honda Pilot include ignition switch issues and transmission failure on the 2003 model and radiator failure on the 2005 version. The ignition switch problem on the 2003 model is the top complaint for the Honda Pilot based on CarComplaints.com data, as of 2015.
The 2003 Honda Pilot's ignition switch eventually goes bad for some vehicle owners, making it difficult to insert the key and start the vehicle. The most common solution is for Honda to replace the ignition switch entirely. Transmission failure also occurs for certain owners of the 2003 model, typically around 120,000 miles of driving. The radiator on the 2005 Honda Pilot sometimes fails around 117,000 for certain vehicle owners.