Hybrid Repair Shop

/Hybrid Repair Shop
Hybrid Repair Shop2018-05-08T05:06:48+00:00
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Hybrid Repair Shop & Maintenance

This inverter unit controls the electrical power flows to and from the batteries, the electric motors, the generators and the AC air compressor for Hybrid air condition 
The Toyota inverter unit contains 2 inverter circuits and a converter / voltage controller.
The power inverter converts the DC voltage of 201.6 volts to an alternating voltage of 500 volts for the electric motor. The small inverter provides the Hybrid AC compressor power supply for Prius  air conditioning. The DC / DC converter takes care of the 12 Volt for the battery.


How does the Power converter / inverter look inside? To give you an idea, here are two pictures of the Prius 1 converter / inverter


 The Hybrid Battery

The THS II Prius Hybrid battery is of nickel metal hydride type (NiMH).
This is a extremely powerful  hybrid battery has a weight of almost 100 lbs
Toyota hybrid battery currently has the highest power density among hybrid batteries

The Prius HV battery consists of:

28 Modules
6 Cells per Module
168 Cells Total
1.2 Volts per Cell
201.6 Volts Total
6.5 A / H (3h)

The HV battery is placed on the bottom plate above the rear axle of Prius. The charging level of the HV battery is held by the computer system between 40% and 80%, which means that Toyota follows a car alarm. There is therefore a full factory warranty of 8 years.
The lifetime of the HV battery in the Prius has been tested in various ways by means of lifetime simulations, but in practice.
The HV battery has been tested at taxi companies in Japan, Sweden and Canada.

Toyota Prius Charging level indicator 

The charge level of the HV battery is maintained by the control software at a level between 40% and 80%. As an indication for the current level, an icon in the energy plate is placed on the central display. This icon indicates the level between 40% and 80% by means of bars. There is also a color indication.


Green is above the norm – The computer system will limit the charging of the HV battery, also limit regenerative power generation and even completely stop at the highest permitted charging level. As far as possible, energy will be extracted from the battery for the drive.

Blue is within the norm – All regenerative energy can be discharged towards the HV battery and the battery can and can provide maximum power for the drive.

Pink is below the standard – The withdrawal of power from the HV battery for the drive is limited and completely stopped at the lowest permissible level.Also, the combustion engine will no longer switch off, but ensure a charging current through the generator to the HV battery.

In an intermediate phase, both electrical power can flow to the HV battery and to the electric motor for the drive.This process is regulated using a number of parameters, such as generated electrical energy (MG1), energy required for the HV battery (charge level), NiMh temperature and required electrical energy for the drive (MG2).

prius battery charge indictor


Prius 12 volts battery


The Toyota Prius has a 12V – 35 Amp / hr lead / cadmium Battery, this battery provides the power supply of the control, control and control systems.This battery is in the luggage compartment and is not just auxiliary battery but essential for the proper functioning of the Prius.
The auxiliary battery is charged from the HV battery via the converter. Loading starts when the hybrid system is started via the Powerbutton. The combustion engine does not need to be in operation for this purpose. 

The Prius Inverters / Converter

Power Inverter The power inverter of the Prius is an electrical converter that converts the DC power of the HV battery and the AC voltage of MG1 and MG2. The inverter consists of two 3-phase bridge circuits, one for MG1 and one for MG2, each circuit consists of 6 power pulses and converts the DC power of the HV battery into a three phase AC voltage and the alternating AC voltage of MG1 and MG2 in a Direct voltage. The activation of the power transistors is controlled by the HV-ECU. This sends a control signal to the power transistors. In the inverter there are a number of sensors / sensors that send information about the supplied power, voltage level, temperature to the HV-ECU. The inverter in the Prius II is also equipped with a voltage amplifier circuit which increases the input voltage (201.6 volts) of the HV battery to an output voltage of up to 500 volts for MG2. The inverter controls the voltage level based on the power requested by the HV-ECU between 201.6 volts and 500 volts, thus keeping the current to MG2 equal. The inverter produces quite a lot of heat during these control operations, so that it must be cooled by a separate and internal cooling circuit together with MG1 and MG2.



 There is also a separate second and smaller inverter circuit, this circuit converts the 201.6 volt DC power from the HV battery to a 201.6 volt AC voltage for the air conditioning compressor.


The Hybrid Converter

 The Prius II converter is placed in the lower part of the compact housing. The converter is responsible for converting the 201.6 volts DC from the HV battery to 12 volts DC for the charging of the auxiliary battery

The 201.6 volts are initially converted by a power transistor bridge cc to 201.6 volts AC, then transformed to a lower voltage by a transformer, then converted into and DC voltage by a rectifier circuit.
The converter also controls the function of the voltage regulator, the voltage level of the auxiliary battery, is controlled and maintained by the converter. The charging of the auxiliary battery is thus not dependent on the incineration of the internal combustion engine. The charging of the auxiliary battery begins when the hybrid system is activated using the power button.

Toyota Hybrid Battery

A closed NiMh battery is mounted for the power supply of the drive via the MG2 electric motor. The HV battery is placed in the rear area on the bottom plate above the rear of the Prius. The battery is equipped with a separate cooling system with fan and is cooled from the interior with suction air. The closed NiMh battery of the Prius II is loaded by MG1 and the regenerative brake system (MG2).

Battery and Ecu charge levels and condition of the HV battery are monitored. Battery-Ecu receives various status signals from the HV battery, such as the battery temperature, outdoor temperature, voltage level of each module, and power to and from the HV battery.
The Battery-ECU checks the process of charging and charging the HV battery and the required cooling. The Battery-ECU communicates continuously with the HV-ECU. The Battery-ECU sends charging / discharge signals to the HV-ECU. The HV-ECU keeps the charging state at the desired level by calculating the load and discharge amp and, if necessary, adjusting the hybrid drive status. The HV-ECU control is configured to keep the charging level of the HV battery as much as possible between 40% and 80% to ensure a long battery life. If the battery pack temperature becomes too high, loading / unloading is limited or interrupted and an alarm is generated.



Our Hybrid Repair Shop

Hybrid repair




At Prius repair shop we specialize in Hybrid repair Such as Toyota Hybrid Lexus Hybrid Repair , Honda Hybrid Repair specially Toyota Prius since 2001, we have invested in EV tool and computerized equipment for Toyota Prius  Hybrid repair and hybrid vehicle service and repair. Toyota has almost entirely designed the hybrid drive of the new Prius third generation engine and Prius transmission. the ride of Toyota Prius becomes more powerful. the part shown here is the electrical part of the hybrid drive. the left one is configuration of the second-generation of Toyota Prius. and the right is belong to second generation of Toyota Prius. as you can see The AC synchronous electric motor/generator and modified configuration of Prius transmission.

Prius Engine repair






Toyota promises that the Prius offers the same comfort and very smooth rides, in the city drive Toyota Prius surpasses that promise thank to the perfectly silent electric motor. But on the highway, the Prius offers great comfort, the car glides like a true limousine on the highway. The new EGR system allows for the recovery of heat from the exhaust gas stream. this allows for a shorter pre-heating time of cooling system of the internal combustion engine, so it has been previously heated up. therefore, the engine may stop earlier. in additional, there is faster heat available for heating the interior. the EGR system. increases the efficiency of the overall hybrid drive relative to the drive in Prius 2





The new power control unit inverter/converter is more compact design and direct cooling of the IGBT power transistors. the converter increase the voltage of 201.6 volts DC to 650 volts and a second DC/DC converter. increase the voltage of 201.6 volts DC to   650 volts DC and a second DC/DC converter converts the 201.6 volts into 12 volts serving charging the 12-volts auxiliary battery.

Rebuild prius Hybrid battery




at Toyota Prius repair shop we rebuild your existing Prius battery pack, the new battery pack of the Prius 3 consist of 28 module of 6 cells of 1.2 volts. each module provides a voltage of 9.6 volts. the total connected load of the battery pack is 201.6 volts. the total maximum peak power of the new battery pack is 27kw (36hp)How you can damage hybrid battery pack of gen 3 Toyota Prius.Damage to the hybrid battery pack can be caused by too long to continue driving in EV mode. in a normal situation, the computer will turn off The EV mode when the charge level of hybrid battery becomes too low. the battery pack should adequately protected by existing  security measures in the logic according to Toyota against deep discharge. in some cases it appears that the security is not enough.sometimes there will merely and the driver can override this to continue driving the electric motor. for more information for hybrid battery please contact us 

Prius Auxiliary battery

if the charge level of the auxiliary battery is too low, eg by self-discharge, the Prius 12v battery will be discharge in a month, a battery should never be fully discharge. 11.5 volts is a safe limit, stronger discharge leads to defects at 10.7 volts. the battery is clinically dead. the problem with lead acid batteries applies to all cars and of course not only Prius.

Problem Arise when a low charge level of the Prius Auxiliary battery getting lower

-The Prius fob does not open only the diver side

-all the electrical system are dead. the Prius is not starting

-the auxiliary battery is not accessible, because the rear door is not open

-the Prius is not going to move because parking brake is on

the Prius can be jump by using the jump start terminal and a second battery, the terminal is located under the hood in the box on the right side.

for learn more  information regarding Toyota Technology click here, for more information regarding your vehicle Hybrid repair please Contact Us

Toyota Lexus Hybrid Vehicle Service & repair
User Rating
5 based on 24 votes
Service Type
Toyota Lexus Hybrid Vehicle Service & repair
Provider Name
Toyota Prius Repair Shop,
23221 Peralta driv B ,Laguna Hills ,CA -92653,
Telephone No.9499160769
Orange County, LA, San Diego
At Prius repair shop we specialize in repairing Hybrid vehicle Such as Toyota Hybrid Lexus Hybrid, Honda Hybrid specially Toyota Prius since 2001, we have invested in EV tool and computerized equipment for Toyota Prius repair and hybrid car service and repair.

google reviews

Brian McDermott
22:18 29 Jul 18
After taking my 2007 Prius to the Toyota dealership and being quoted an extremely high price for the repair, I thought that my Prius was totaled. However, after looking online we found Ken and decided to take a chance. He ended up being able to fix it for half the price and a better warranty. He finished on time and even did more work to the car for free. Ken was a pleasure to work with and I will definitely be taking my car there for future repairs. I would highly recommend this place!read more
mark strain
21:14 25 Jul 18
2005 Prius- 159,000 miles While parallel parking last week, I kissed the curb with my passenger’s side rear bumper. It dislodged several supportive clips, showing about two inches of clear space on one side. I shook my head as the bumper was still attached but looking for a railroad track to tear it off. I called Ken at the Prius Repair Shop for advice. He asked several questions to make sure the car was drivable and the bumper wasn’t dragging the ground. He then asked me to bring it in the following day. I did, and he called back after lunch and said it was ready. Ken reattached the bumper with new clips and said, "no charge" as it only took several minutes to fix. For the last two years I’ve had Ken perform regular oil and filter changes, a tune-up, and replace the inverter and water pump. Ken is honest, understands the complex Prius Hybrid system, and does what he say he will do.read more
Jason Laikam
19:44 14 Jul 18
Was having problems with coolant level. Ken helped me resolve my problem.. and gave me some good advice on my 200,000 miles Prius 2006. Assured me that it is a workhorse and that it had a long way to go.read more
Chantal Elise
20:46 03 Jul 18
I just picked up my car from here, and I just want to say that all these 5 star reviews are well-earned!!!! I am so thrilled with the exceptional service I received and the quality of care. I didn't feel I was overcharged as I have with many countless other mechanics in the past, and my prius went from sounding like a jackhammer and a jar of crickets were jammed under the hood to being as silent as a snail!!! They didn't try to sell me a bunch of unnecessary junk, they didn't make me feel like an idiot, they were just kind and gracious and it's safe to say I won't ever be going anywhere else for maintenance! THANK YOU!read more
Jacqueline Toy
03:08 07 Jun 18
Ken is the best mechanic I know. I have been bringing my cars to repair for over 10 years now. I won't go anywhere else! I had a 1988 mercedes and now I have a 2001 toyota camry. Ken has helped me keep my cars running! I commute all the way to Laguna Hills since he is a very trust worthy mechanic. He is quick to finish any job that is necessary and will listen to anything that you may have a concern with. He is very friendly and I highly recommend for anything from oil checks to assisting with smog checks. There is a certified smog check right next door, so very convenient if you are needing to do that too!read more
Karolina Grechuta
23:04 04 Jun 18
This shop is absolutely amazing. I am so grateful to have found Ken. He is hands down the best mechanic I’ve been to. Very honest, and knowledgeable which is a rare thing in and of itself in this industry. My engine was making weird noises and I was taking it from one mechanic to another for diagnoses and estimates. I was not happy with anyone’s answers or integrity up to this point which led me to call Ken, whom I came across through a referral from a friend. When I first called him and told him the engine problem I was having with my Prius he asked me a couple questions and diagnosed the problem immediately which no one was able to do before. He didn't even hesitate. Based on the content of the questions, the speed to which he got right to the heart of the issue and his kindness, right there I knew he knew his stuff, he wasn’t going to take advantage of my situation and that's when I started to relax that I was finally in good hands. When I brought my car in he looked it over, confirmed his diagnoses and then spent hours trying every trick in the book to see if there was any way to save my engine. As it turns out my engine was failing due to other mechanics mishandling that I had been taking it to. Unfortunately it was too far gone at that point and I needed to make plans to replace it. Ken got to work and found a remanufactured engine for me at a very fair price, installed it and had my car back to me without any hiccups and in a very short timeframe. Ken is hands down THE expert when it comes to Prius hybrids. I will be taking my car to him for routine maintenance I don't want anyone else working on my car after this engine ordeal. There's no one like Ken you truly are in the best of hands with him.read more
Nicole Lonberger
00:23 23 May 18
Prompt, friendly and fast service. Ken responded to my inquiry quickly and scheduled me to come in the next day. My check engine light was on. Ken checked it and told me instantly what need to change in my car. He was able to turn it around that same day. Ken also checked in to see how my car was running. Very happy with the experience. Will continue to go there & refer my friends.read more
Carla Mendoza
01:07 17 May 18
Thank you for fixing my Prius Ken!! Works great and got it to me quicker than I thought! I had to get a new motor installed which was a bummer but I'm glad I found Ken! Super nice and helpful, very knowledgeable!!read more
16:35 09 May 18
Awesome service! Quick turn around time, and fair pricing. Can’t really ask for more than that when it comes to prius maintenance or repairs! I will forever go to ken for all of my prius problems or maintenance that needs to be addressed. I had to have a few parts replaced on the prius and the dealership quoted me an astronomical price. After speaking with ken on the phone, I was educated on what exactly went wrong with my prius and what my options were to cut corners on cost. Bottom line! If you have a prius and don’t take it here you’re a fool.. Thanks ken, be seeing you in the future! -Paulread more
Stentorian Voice Training
23:56 02 Nov 17
I'm a shade tree mechanic and there were some unfamiliar hybrid stuff I just didn't want to deal with... Ken knows his stuff! Its a very personable small shop and he's honest about cost but very reasonably priced.read more
Jake Jones
16:18 12 Sep 17
Ken did a great job answering all of my questions and diagnosing my vehicle. I would highly recommend him to anyone.
Art Pazornik
18:11 09 Sep 17
I have had my car (2007 Prius) serviced by Ken 3 times and each time I've been totally satisfied. I have 253,000 miles on the car and as long as Ken's around I have no plans on replacing it. He is honest, fair and a terrific mechanic. I highly recommend him. 5 stars for sure.read more
Laura Gustafson
17:24 22 Aug 17
This place is great! I was having trouble finding someone to install a 12V replacement battery in my Prius but finally found their website and they installed it in about 20 minutes for more than half the price my Toyota dealership was charging. Really nice people and super knowledgable about hybrids!read more
Kristen R
21:18 12 Jul 17
Ken accommodated my car with ease and quoted me the best price out there. My car was back to me in a few short days, and now I'm very happy with the results. Thank you!read more
Denise Shaw
22:25 06 Jul 17
I'm so happy to have found and reached out to Ken before taking my Prius to the dealer. He diagnosed and fixed my issue in less than 24 hours at a VERY reasonable price. Ken will be my "go to" mechanic for all of my Prius needs.read more
Joe Wolfgram
00:53 30 Jun 17
Brought my car in with red triangle of death and got it fixed same day for half the price Toyota was going to charge me. I'm very happy, when I have more money I'll get my A/C fixed here too.read more
Haytham Salem
18:01 14 Jun 17
It's always nice to get the job done by someone who really knows what he's doing! If you have an issue with your hybrid so don't waste your time and money somewhere else because this is the place to fix your car professionally and with a reasonable cost. I came here with some unknown issues, they took my car in a busy day and got it done in just few hours! I highly recommend this place.read more
Leo Domino
19:16 07 Jun 17
My wife and I took our 2007 Prius over to Ken at Caspian Motors after reading great reviews about his business. We were about ready to give up on the Prius and get rid of it. Ken is a great mechanic and also a very honest one. He did a lot of great repair work on it for a very good price and saved our car! I HIGHLY recommend if you need car repairs, definitely go see Ken. He's got our business from now on!read more
Mary Manca
22:40 10 May 17
Ken at Caspian took the time to explain my options. He squeezed me in on a busy day, and did the work for the quoted price, far less than I would have spent at the dealership. I'm confident they know what they're doing, and will definitely go back and refer to friends and family. read more
Beach Smile Dental
16:43 21 Apr 17
Brought my Lexus hybrid to be checked after first taking it to the dealer....what a difference in price. Ken is very knowledgeable and got my Lexus hybrid battery fixed for less than half the price I was quoted. Highly recommended!read more
Shahram Ray
02:28 08 Apr 17
I have my two vehicle. Honda hybrid and lexus hybrid repaired at this place. My overall experience is very positive. I recommended friends and family they all have positive experience ken is very knowledgeable and know his craft very well. If you have hybrid vehicle I highly recommend this place. you won't be disappointed fair price knowledgeable and honestread more
Jacob Whitehead
18:35 28 Mar 17
I took my RX400h in for repair. Ken was absolutely wonderful. He was quick to give provide me with options and was the best price around. The dealer quoted me over 5 times what Ken fixed my vehicle for. I am truly grateful for his help!read more
Jean Ridlon
06:16 02 Mar 17
Ken has repaired my a/c, did my brakes, does my oil changes, and everything done timely, doesn't charge an arm OR a leg! I just love this guy. He's always available to explain everything, too. I highly recommend anybody with a foreign car to use this guy. My Prius is a little older and Ken is going to keep it going until it is MUCH older.read more
Grady Raymer
21:15 31 Jan 17
As advertised- skilled, smart, polite and reasonable. Ken was able to bring my Prius back to life as other dealerships were offering to scrap it for me. Some mechanics are spooked by the Prius and yet Ken embraces it. Don't waste your time- go to an expert that cares = use this shop for all of your Prius needs. Very happy to have found this place in South Orange Countyread more
Nathaniel Masudal
19:36 21 Jan 17
Searching the web for a reliable and affordable mechanic close-by, I found Ken at Caspian Motors and am very glad I did. Calling right away, I explained what work needed to be done on my 2008 Prius and Ken quoted me his prices, and they were great! The job was done in half a day and got my car back running great! Highly recommend; definitely returning for future services. Thanks Ken!read more
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