Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer, however, we have our own expert looking at additional vehicle problems.

Battery: If a batter charger is connected directly to the battery, it can trigger a trouble code on cars with the intelligent battery sensor. Battery chargers should be connected to the terminal under the hood, not the battery itself. (2003-05)

Battery: The battery may die overnight if the key is left in the ignition on vehicles with electronic immobilizer system. (2004-06)

Electrical problem: Due to a bad sensor, an erroneous low oil warning was coming on when the key was turned off and the company was replacing the sensor only if a customer complained. (2003)

Engine knock: Engine may run rough and trigger the check engine light due to defective ignition coils. Only BRMEI coils, not Bosch, were affected. (2003)

Keyless entry: The remote keyless entry may not unlock the doors and is usually due to lack of use of the key, particularly the spare key, as the battery is recharged by the vehicle. (2003-05)

None: There was a service campaign to repair the telematics control unit (TCU) because it would go into the wrong mode at below freezing (32 degrees F) resulting in no telematics and possible battery discharge. (2004)

Oil leak: Oil may leak from the cylinder head and/or valve cover gasket into the #2 spark plug well due to porosity in the M54 engine head casting requiring replacement (2003)

This table lists costs of likely repairs for comparison with other vehicles. The dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the typical repair without extras or add-ons. Like the pricing information, replacement costs can vary widely depending on region. Expect charges at a new-car dealership to be slightly higher.

2003: In the event of a crash on some cars, airbag deployment may not occur.

2003-04: Under certain environmental conditions, vapor lock in fuel pump could occur, causing engine to stall and be unable to restart for 15-20 minutes.