20 Most Recent 2004 Toyota Prius - Page 5 Questions & Answers

There is a 10 amp horn fuse either in your cabin fuse box or the engine compartment fuse box. If it is not the fuse, you will need to troubleshoot to find the cause. First, find the horn relay (usually in the engine compartment relay box) and pull it out. Have someone hold the horn button down while you push the relay back into it's socket. The relay should click as you push it in. If it clicks, your problem is probably in the wiring to the horns. You'll have to trace the wires from the horns to the relay box to see if the connector went bad or what happened. If the relay doesn't click, you can try replacing the relay, but the problem may also be with the horn button. To troubleshoot the button, you need a 12 volt test light. You can get one for a few bucks at a parts store or WALMART auto tools isle.
Use the test light to interrogate the relay socket. Remove the relay from it's socket. connect the clip of your test light to the positive side of your battery and then probe all of the relay socket terminals while someone holds the horn button down. One of the terminals should turn the light on bright. Some of the terminals may light it dimly, but at most one will make it bright. If none makes it bright, your horn button is not working or the wire from the horn button to the relay box is cut. If you have questions, please let me know. If you want to understand the relay, see my post at http://www.fixya.com/cars/r6022358-relay_check

P0A93 is an inverter cooling problem. The inverter is cooled by a dedicated cooling system, which consists of an electric water pump, cooling fan, and radiator. This cooling system is independent of the engine cooling system.The mechanic should check if there is sufficient amount of coolant for the inverter, check if the coolant hose is not bent or clogged, if the water pump / cooling fan motor connections are ok, and of course if both of the cooling fan motors are OK

red triangle with ! is the vehicle stability control not the ebattery prolly a bad sensor

Hello. One or more of your storage batteries has gone bad. Take it to a dealership or to an auto electric repair shop and have it checked. J.

I'm not aware of any such problems, and puzzled as to why you suspect the transaxle but one thing is certain: you have a very technologically advanced car with many highly interconnected systems controlled by complicated firmware/software. It has many benefits, but one of the trade-offs is that you're effectively tied to visiting Toyota dealers when things go wrong and the vehicle absolutely MUST be maintained according to manufacturer specifications.

Hybrid drive is still very new and is an immature technology. Sorry, but you simply won't find the kind of useful and comprehensive answer you need anywhere other than at a Toyota dealer. My company has run a fleet of assorted Toyota and Honda hybrids since they were first introduced and so it's my experience that any problems you experience will rapidly escalate and become far more difficult and costly to diagnose and fix. This is true enough of any modern vehicle, but hybrids have far less fault tolerance.

If it helps, many baffling and apparently major faults have often turned out to be caused by simple things like faulty sensors, solenoids and software bugs. Poor advice and guessing just turns them into money-pits.

In short, get your car to Toyota asap and find out exactly what's wrong. You can then decide what to do next.

The only places you will find these BUMP STOPS is at a breakers yard or at the Toyota agents. Dont bother looking elsewhere. If I were you I'd try the breakers yard first. Ususally much cheaper.

Here is the answer that you are looking for: Never.
The auto trans fluid in a Prius is what we call "World Spec", and never needs to be changed. Why? Because the Prius trans fluid is not used for hydraulic pressure or cooling the ATF fluid due to the lack of the aforementioned hydraulic pressure. All that the ATF does is perform a "lubrication" function. As long as there is no contamination of the fluid (such as being in a flood), do not bother with it.
Regards
Toyota Ed
Prius Master Tech

EVERY 2 AND A HALF YEARS

Toyota uses Dex III ATF. You can buy from Wal-Mart:

1) Cheaper: Super Tech DEX III ATF $10/gal
2) Better: Valvoline MaxLife DEX/MER ATF $18/gal

Both are compatible, depending on how much you care about your car and how deep your pockets are :)

To check ATF fluid, look for an orange/red color dipstick (similar to the yellow dipstick for engine oil). You need to have the car in running temperature, shift through from Park, N, D, ... then back to D, N, Park (stopping for a few seconds in each gear). Then go to measure your fluid level.

If you haven't check it ever, it might be pale brown, which may look clean to you, but very deceivingly... becaue it should look red-ish / pinkish. When chemicals broken down in ATF, the red-ish color disappears. It may even be brown and smell burnt, that just mean your transmission is not in a very good shape.

If you do change the ATF, it's good to put a bottle of Lucus Oil brand "STOP SLIP / TRANSMISSION FIX" in it during your fluid change. It is a 24oz. bottle cost about $12 @ Wal-Mart or any auto stores. It will extend your transmission's life regardless. I highly recommend that.

P0A93 is an inverter cooling problem. The inverter is cooled by a dedicated cooling system, which consists of an electric water pump, cooling fan, and radiator. This cooling system is independent of the engine cooling system.The mechanic should check if there is sufficient amount of coolant for the inverter, check if the coolant hose is not bent or clogged, if the water pump / cooling fan motor connections are ok, and of course if both of the cooling fan motors are OK.

P3108 is generally loosing communication with the A/C system control module. This can usually be solved by checking the wires and or the converter inverter assembly.

HOPE YOU ARE NOT IN THE CAR ALONE,LOL,BUT,IT JUST SOUNDS LIKE A BAD RADIO,GOOD LUCK

Okay.

Will email you soon.

Do rate all solutions please.

First, check all the headlight bulbs and see if one of them is burned out. If all the bulbs are ok, then you will have to replace the vehicles computer controlling the headlights. Click on the link below to view the replacement part needed. If you are mechanically inclined, you can replace it yourself. Otherwise, you have to take it to the dealer.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=350291673373&crlp=1_263602_263622&ff4=263602_263622&viewitem=&guid=c3e4bd6b1260a0e202716061ff9d85f2&rvr_id=&ua=WXI7&itemid=350291673373

http://www.hybridcars.com/forums/hid-headlight-replacement-t501.html

http://priuschat.com/forums/gen-ii-prius-care-maintenance-troubleshooting/34584-headlight-problem.html

Yes that is correct. But sometimes the trans is sealed off, so even having the fluid checked has to be done by the dealership.

I dont think you can unless you can get the garage door remote to operate on the same frequency as the Prius remote and you would need to look up the remote supplier to see how to change it.With the info ive got that would be the best answer i can give you at this stage

should be (h)and (mbutton) near the display to set it