2010 has a "#4 leak" in front strut

Do you notice any driveability issues? What about abnormal tire wear?

If not, the dealer maybe looking to increase their cash flow.

Our 2010 Prius II has 155 k miles and still going strong. I have not changed shocks and owned the car since mile 14.

Not sure what #4 leak is, but you could look at the left front strut they point out and see what might be wrong with it (oil seeping out of the bottom would be my guess). If this is the case, replacement will need to be done at some point, but shop around. With this job, it is not specific to Toyotas, so no need to use the dealer. What area are you from? If you give us a location, we might be able to help point you toward a good Indy shop.

Hope that helps.

 

Ask the dealership? They have a responsibility to speak plainly and clearly to their customers.

 

See attached.

If you determine the front struts need to be replaced, they should be replaced in pairs.
Yes, you could defer the front wheel alignment if you wish.
Before you buy the struts make sure you have agreement from the local shop that they will accept the use of parts you provide.

 

@Patrick Wong 's attachment shows various "level 5" thru "level 1" scenarios, with 5 being the most minor and 1 being the most severe. Haven't looked through it picture by picture, but it seems to be consistantly saying that either level 5 or 4 does not warrant shock replacement.

 

Maybe print out the pdf and ask them is that's what they were talking about.

 

If you do decide to replace the struts, consider Koni FSD. I have them on the front of my Prius and the handling is way better, much less body roll when cornering. But they cost about double the KYB struts.

 

Seeing a little oil on the shaft is not unusual at that milage -- forget about it. They do need to be replaced in pairs -- and be careful when replacing. Check out reviews if you go aftermarket -- and be prepared to do all four if the car has a lot of miles.

With most vehicles the shocks/ struts are used in more than on car line -- the OE's will be exact - same as what was supplier as new. Many aftermarket shocks are universal -- they are the same regardless of the application. This may not matter -- often the aftermarket can produce a firmer ride. May not be a good thing with the Prius.