Here you can discuss the technical ins and outs of the Prius c and related hybrid components. Sat, 14 Mar 2026 19:25:27 +0000 Sat, 14 Mar 2026 19:25:27 +0000 PriusChat https://priuschat.com/forum/prius-c-technical-discussion.127/ Fri, 27 Feb 2026 04:06:00 +0000 https://priuschat.com/threads/help-16c1-throwing-code-p0ac2.259029/ https://priuschat.com/threads/help-16c1-throwing-code-p0ac2.259029/ invalid@example.com (JackiStardust) JackiStardust
Looked up the code and wondering how exactly I could check to see if the sensor module on the side of the hybrid battery is bad. We took all the covers off and checked all wires and connectors and nothing is corroded. Is there something else I should be looking for ? Idk anything about hybrids unfortunately and can't afford a mechanic right now.]]> 6 Mon, 27 Oct 2025 01:32:20 +0000 https://priuschat.com/threads/automatic-headlights-for-a-2014-prius-c.257625/ https://priuschat.com/threads/automatic-headlights-for-a-2014-prius-c.257625/ invalid@example.com (hartshut) hartshut Sat, 25 Oct 2025 19:38:26 +0000 https://priuschat.com/threads/small-paint-cracks-on-roof-pillars-area.257586/ https://priuschat.com/threads/small-paint-cracks-on-roof-pillars-area.257586/ invalid@example.com (Sonic_TH) Sonic_TH

]]> 1 Thu, 02 Oct 2025 01:01:16 +0000 https://priuschat.com/threads/bad-12-volt-battery.257291/ https://priuschat.com/threads/bad-12-volt-battery.257291/ invalid@example.com (14see) 14see
Will a low 12 volt battery cause the symptom?
Here's a screenshot from Dr Prius.
Thanks View attachment 281405]]> 3 Wed, 01 Oct 2025 17:37:55 +0000 https://priuschat.com/threads/suspension-creak-2012-prius-c-four.257285/ https://priuschat.com/threads/suspension-creak-2012-prius-c-four.257285/ invalid@example.com (Jared Milhoan) Jared Milhoan

The video is of my drivers side front suspension while I’m pressing down on the front of the frame near the radiator, in line with the driver tire. Shaking the car side to side (from the drivers door) doesn’t make the noise.

I replaced the sway bar end links as the boots were torn - this had no change.

At this point, I’d like to pinpoint the noise before buying additional...

Suspension Creak 2012 Prius C Four]]> 1 Mon, 29 Sep 2025 21:06:57 +0000 https://priuschat.com/threads/current-leak.257186/ https://priuschat.com/threads/current-leak.257186/ invalid@example.com (Jean Benoit) Jean Benoit 7 Wed, 10 Sep 2025 08:48:36 +0000 https://priuschat.com/threads/a-c-compressor-question.256916/ https://priuschat.com/threads/a-c-compressor-question.256916/ invalid@example.com (CMJAnew) CMJAnew I’m not apposed to taking it to a garage (not my local Toyota dealer) but wouldn’t mind tackling a “simple” job.
Thanks]]> 13 Mon, 08 Sep 2025 20:21:26 +0000 https://priuschat.com/threads/2014-prius-c-key-programming.256986/ https://priuschat.com/threads/2014-prius-c-key-programming.256986/ invalid@example.com (Ed480) Ed480 Wed, 27 Aug 2025 22:25:26 +0000 https://priuschat.com/threads/stupid-is-as%E2%80%A6-or-hv-coolant-leak.256674/ https://priuschat.com/threads/stupid-is-as%E2%80%A6-or-hv-coolant-leak.256674/ invalid@example.com (CMJAnew) CMJAnew He came and went…..I test drove, only to have the “system warning” come back on. Barely made it home from a 19 mile round trip.
I screwed around with my cheap...

Stupid Is As…..or HV Coolant Leak]]> 7 Tue, 12 Aug 2025 02:06:49 +0000 https://priuschat.com/threads/hvb-cells-questions.256573/ https://priuschat.com/threads/hvb-cells-questions.256573/ invalid@example.com (Roberto520) Roberto520
Thanks in advance]]> Mon, 11 Aug 2025 16:59:07 +0000 https://priuschat.com/threads/2013-prius-c-overheating.256314/ https://priuschat.com/threads/2013-prius-c-overheating.256314/ invalid@example.com (Scootb73) Scootb73
I changed the waterpump and thermostat last year,and again after the overheating started,I also bought a new radiator cap just in case.

oil is clear and not milky,car runs great otherwise except cold air from the passenger vent,rest blow hot.
Radiator fan works.

A mechanic had my car for about 6 weeks,he told me he spent 4 hours on it...

2013 Prius c overheating]]> 5 Thu, 07 Aug 2025 21:43:53 +0000 https://priuschat.com/threads/front-wheel-bearing-directional.256495/ https://priuschat.com/threads/front-wheel-bearing-directional.256495/ invalid@example.com (CMJAnew) CMJAnew My question…..is the bearing directional? That is, is it required to go in with an inside vs outside, one way only. The reason I ask is…the wheel speed sensor on the driver front is throwing a code, and I’ve lost cruise, traction, and stability control functions.
Thanks for the help.]]> 7 Thu, 07 Aug 2025 01:35:16 +0000 https://priuschat.com/threads/driving-without-hybrid-system.177457/ https://priuschat.com/threads/driving-without-hybrid-system.177457/ invalid@example.com (CMJAnew) CMJAnew
Here's my question: Can I Continue To Drive The Car On ICE Only?
The reason I ask: I very indecisive about replacing the batteries ($3700) or trading the car immediately.
Actually considering...

Driving without hybrid system????]]> 43 Fri, 18 Jul 2025 02:57:21 +0000 https://priuschat.com/threads/2013-prius-c-cig-lighter-not-working.256212/ https://priuschat.com/threads/2013-prius-c-cig-lighter-not-working.256212/ invalid@example.com (Javierz0509) Javierz0509 I've already checked the fuse, and it appears to be fine, but I replaced it just to be safe. Unfortunately, the port still doesn't have power. I'm out of ideas on how to resolve this and would greatly appreciate any help or suggestions you might have.]]> Sun, 13 Jul 2025 18:04:52 +0000 https://priuschat.com/threads/14-c4-current-codes-help-please.256121/ https://priuschat.com/threads/14-c4-current-codes-help-please.256121/ invalid@example.com (Adventurer2112) Adventurer2112 I replaced MAF sensor.
I replugged orange plug under rear seat.
Thanks Brian.
Car goes into ready, ice starts, car moves.

These are now the current obd2 codes per Techstream ver 17.
Current codes p0101 MAF circuit low,
P0101D a/f sensor heater circuit performance bank1 sensor 1 stuck on
P2118 throttle actuator control motor current range / performance
P261C engine coolant pump B control circuit low
U0293 Lost communication with hybrid vehicle control.

How...

14 C4 current codes, help please]]> 12 Fri, 13 Jun 2025 09:03:01 +0000 https://priuschat.com/threads/prius-c-led-headlights-customization.255692/ https://priuschat.com/threads/prius-c-led-headlights-customization.255692/ invalid@example.com (Roger2689) Roger2689 2 Tue, 10 Jun 2025 13:51:20 +0000 https://priuschat.com/threads/have-an-oil-leak-use-a-heavier-oil.255608/ https://priuschat.com/threads/have-an-oil-leak-use-a-heavier-oil.255608/ invalid@example.com (Rainbow Dash) Rainbow Dash I have a 2013 prius c. It has an oil leak around the gasket near the timing chain and to get it fixed is almost as much as the car.

Instead of using 0w-20, I was thinking of switching to 0w-30 to minimize, if not stop the oil leak.

The immediate downside is decreased fuel economy and more wear during cold starts.
I live in alabama so the later is a non-issue.

GM went to a heavier oil to minimize oil leaks.

Thoughts or ideas?]]> 8 Thu, 05 Jun 2025 03:30:06 +0000 https://priuschat.com/threads/led-headlights-for-2012-prius-c.212576/ https://priuschat.com/threads/led-headlights-for-2012-prius-c.212576/ invalid@example.com (wongnog) wongnog
Amazon CA:

Amazon US:

When I asked the seller if these should work, they replied "...your vehicle's 9005 headlight bulb is shared with your DRL, as the working voltage of DRL is 6-9V, the headlight is 12V, the voltage is different, it is too powerful to light up in DRL model. It may be flickering or not...

LED headlights for 2012 Prius C]]> 18 Sun, 27 Apr 2025 11:50:03 +0000 https://priuschat.com/threads/tc-slip-permanently-on.250140/ https://priuschat.com/threads/tc-slip-permanently-on.250140/ invalid@example.com (Jshhh) Jshhh
1. No ignition barrel
2. Headlights & indicators not working
3. TC/Slip light on (the light that comes on when surface is slippery)
4. Cosmetic damage (windows etc.)

When I got my car home in...

TC/Slip permanently on.]]> 11 Wed, 12 Mar 2025 16:47:02 +0000 https://priuschat.com/threads/three-dash-lights-indicators.223490/ https://priuschat.com/threads/three-dash-lights-indicators.223490/ invalid@example.com (LnG) LnG
The Brake system warning light (an exclamation mark in a circle inside two brackets), the Slip indicator light (A car with two wavy lines), and the ABS warning light (ABS). The Maintenance soon indicator comes on and then disappears.

What the heck does this mean? The lint catcher is clear and nothing is blocking the opening.]]> 9