Crosstour Overheating + Check Engine: Cooling System Crisis

I had similar issues with my 2013 Honda Accord V6 last year. The symptoms matched yours exactly, check engine light, overheating, and low coolant warnings. After inspection, the mechanic found the water pump's electrical connector had corroded and wasn't making proper contact, causing the pump to work intermittently. This explained the overheating and coolant issues, as the coolant wasn't circulating properly through the system. It was a serious problem that needed immediate attention since continuous overheating could've damaged the engine. The fix involved replacing the wiring harness for the water pump and installing a new connector with better weatherproofing. Been running smooth since the repair, no more warning lights or overheating. Based on your symptoms, I'd definitely get the water pump and its electrical connections checked out. These Honda engines are solid, but electrical issues with cooling components can be tricky to diagnose. Worth getting a second opinion from a shop that specializes in Hondas, the control module communication errors your previous mechanic mentioned could be related to this water pump issue.

Thanks for sharing your experience! That's super helpful, especially since you had such similar symptoms. It's good to hear you got it sorted out, electrical issues can be such a pain to diagnose correctly. Just curious, do you remember roughly how much the repair ended up costing you? And has everything been running smoothly since, or have you noticed any other quirks pop up?

Hey there! Happy to give you an update about the costs. The repair bill came to 155€ to fix that faulty cable connection on the water pump. And I've got great news, after getting it fixed, that pesky "Message error between control devices" completely disappeared! My Accord's been running like a champ since then, no more overheating, no warning lights, nothing. It's such a relief when you get the right diagnosis and fix, isn't it? The mechanic explained that these electrical connection issues can cause all sorts of confusing symptoms, which is probably why your previous mechanic was a bit off with their diagnosis. I'd say it was money well spent, especially considering how much damage overheating can do to an engine. The car's been solid as a rock for months now, no other issues have cropped up at all. These Hondas really are reliable when you sort out the root cause of any problems. Let me know if you end up getting yours checked out, would be interesting to hear if it's the same issue!

Thanks for all the details about the repair costs and the follow-up! Just wanted to update you all, I took your advice and got my Crosstour checked by a new mechanic last week. Turns out you were spot on! The technician found a corroded wire connection to the water pump, but also noticed my thermostat was acting up. Got both issues fixed, and the total came to about double what you paid due to the extra thermostat work, but honestly, it was worth every penny. My car's running so much better now, no more warning lights, temperature gauge stays right where it should, and the engine's purring like new. Funny how something as simple as a bad connection can cause so many scary symptoms! Really appreciate everyone's input, saved me from stressing out too much and helped me find the right solution. That's what I love about these car communities, there's always someone who's been through it before! Thanks again for pointing me in the right direction! Off to enjoy my properly functioning car now!