Honda is updating the DC-DC converter in some Insights. Apparently the temperature sensor in some DC-DC converters is defective, causing the DC-DC converter to shut down, cutting power to the 12 volt components. If this happens, the charge indicator light will illuminate, and the car will continue running the 12 volt components on the backup 12v battery until that battery is depleted.

Below is a copy of the letter that some U.S. Insight owners have received:

HONDA
AMERICAN HONDA MOTOR CO., INC.
1919 TORRANCE BOULEVARD - TORRANCE, CA 90501-2746
(310) 783-200

November 2000

Product Update: Insight Charging System

Dear Insight Owner:

We have sent this letter to inform you of a potential problem with your 2000 Insight.

What is the problem?

Your car has a DC-DC converter that is part of the Integrated Motor Assist (IMA) system. The DC-DC converter changes the 144 volts used by the IMA system to 12 volts to recharge the battery that powers the lights, stereo, windows, etc. Its purpose is very similar to the alternator on a conventional vehicle.

The DC-DC converter has built-in thermal protection. It will shut down if it detects that it is overheating, and start up again when it has cooled down. We have found that some converters have defective internal temperature sensors, which will cause them to shut down even though they are not overheated. If the DC-DC converter shuts down, the Charging System indicator on the instrument panel illuminates to tell you the battery is not being charged.

What should you do?

Call any authorized Honda dealer at your earliest opportunity, and make an appointment to have your car repaired. They will replace the DC-DC converter with a new unit. This repair will be done free of charge.

What to do if you fell this notice Is In error.

Our records show that you are the current owner or lessee of an Insight involved in this campaign. If this is not the case, or the name/address information is incorrect, please fill out and return the enclosed, postage-paid Information Change Card.We will then update our records.

If you have questions.

If you have any questions about this notice, or need assistance with contacting a Honda dealer, please call the Honda Consumer Affairs Department at (800) 999-1009.

Thank you for your cooperation. We regret any inconvenience this may cause you.

Sincerely,

AMERICAN HONDA MOTOR CO., INC.
Honda Automobile Division