MFD and Combo Meter problems Gen 2

There does seem to be anecdotal information to suggest a correlation of removing power from the CM to it finally failing. No-one (electronics guru) has offered an explanation of why removing the power would cause the capacitors to finally go over the edge.

I believe the "Display" (Consumption/Energy Monitor) screens use info from (or via) the CM, so it is not surprising that it is affected by the CM not working.

In any case, you need to have your CM repaired and then you will have no more problems. One thing to bear in mind, if you are getting anywhere close to 299,999 mi, you might consider retrofitting a 2006-2009 CM and light cluster to your 2004. If you are interested, Matt @Texas Hybrid Batteries can give you the details. You can start a conversation with him, if you have any questions.

 

I doesn't make sense to do the job twice, may as well bite the bullet and do it now, especially as you will be paying someone to do it. The labor cost won't be that much more to pull the light cluster and replace it as well. Just a thought.

 

On the 2004-2005 MY Prius, the odometer tops out at 299,999. That was addressed in the 2006-2009 refresh – the limit was removed.

Retrofitting a 2006-2009 CM together with the 2006-2009 light cluster allows your 2004 odometer to go past 299,999 miles.

Matt @Texas Hybrid Batteries can supply what you need and can answer any questions you might have to do this retrofit.