Exterior rear view mirror is broken but only the glass where can get a replacement for it dont want to change whole system just your Toyota Highlander year 2003 with heated glass?

Finding a replacement *just* for the glass on a 2003 Toyota Highlander heated rearview mirror will be challenging. Most auto parts stores and online retailers sell the entire mirror assembly rather than just the glass. This is because the heating element is integrated into the glass itself, and separating it is often not feasible without damaging the element.

Your best bet is to try these avenues, but success isn't guaranteed:

* Junkyards/Salvage Yards: This is probably your best chance. Search online for auto salvage yards near you and call ahead to see if they have a 2003 Highlander with a heated mirror in good condition. Be prepared to potentially pay a small amount for the whole mirror assembly; getting just the glass separately is unlikely.

* Online Parts Websites (with caution): Websites like eBay or Amazon *might* list individual mirror glass replacements, but carefully examine the listing. Make sure it specifically states compatibility with your 2003 Highlander *and* that it's heated. Be wary of mismatched or inaccurate descriptions. Return policies are crucial if this route is chosen.

* Toyota Dealerships (least likely): While it's the least probable, you could inquire with a Toyota dealership parts department. It's unlikely they sell just the glass, but there's a small chance they might have a used part or could offer information on where to find one.

Important Consideration: If you find a replacement glass, ensure it's the correct size and shape for your existing mirror housing. Even if it's marketed as a fit, double-check dimensions. Incorrect installation could lead to further damage or safety hazards.

In short, while replacing only the glass is ideal, it's unlikely due to the integrated heating element. Your most realistic option is probably finding a used mirror assembly from a salvage yard.