Mercedes-Benz S400 Hybrid Power Electronic Module, Inverter Converter 2010 to 2013, Rebuilt and Tested in USA by YOUCANIC, 1 Year Warranty, A2215404450 A0009064001
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Rebuilt S400 Hybrid Power Electronic Module From The Shop That Made The Videos
The inverter and converter module that keeps a 2010 to 2013 Mercedes-Benz S400 Hybrid starting and charging. Rebuilt and tested by YOUCANIC, the company whose S400 repair videos your mechanic learned from, and covered by a 1 year warranty that is honored in Baltimore, Maryland, not in an eBay message thread.
Power Electronics Or Battery? Confirm Before You Buy.
The symptoms below overlap with a failing high voltage battery, and replacing the wrong one is an expensive mistake. We regularly see it in cars that reach our shop after a part from another seller "did not work."
Send the fault codes from a full hybrid system scan and your VIN to support@youcanic.com, or call 1-888-959-4265, and we will tell you which part the codes point to before you order. No charge.
Watch The Replacement Before You Order
This is our step by step video for removing and installing the S400 power electronic module, including the high voltage safety procedure and what to check if the car still does not start afterward.
Related: S400 hybrid battery problems and the starter motor retrofit for the S400 no start problem.
Symptoms Of A Failed Power Electronic Module
The power electronic module converts high voltage DC from the hybrid battery into AC for the electric motor and back again when the motor acts as a generator, and it steps voltage down for the 12 V system. When it fails, the hybrid system cannot start the engine or charge the battery.
What The Owner Sees
- • Car will not start or will not enter Ready mode
- • Hybrid system or battery warning messages in the cluster
- • Hybrid battery not charging, or charge level dropping while driving
- • Reduced power or limp mode
- • Intermittent electrical faults or shutdowns, sometimes after a jump start
What The Scan Shows
- • Codes stored in the power electronics or inverter control unit
- • DC to DC converter or 12 V supply faults
- • Communication faults between the power electronics and the hybrid battery management system
- • A battery that tests healthy on its own cell data
If the codes point at the battery instead, do not buy this part. Email us the codes first.
Why Buy It From YOUCANIC
- ✅ Rebuilt and tested. Each module is restored to OEM specification and tested before it ships. It is not an untested pull from a wrecked car.
- ✅ We work on these cars. S400 owners drive and ship their cars to our Baltimore shop for hybrid system repair. The module we sell is the module we install.
- ✅ We made the videos. Our S400 diagnostic and replacement videos have been online since 2021 and are the ones mechanics follow. Support comes from the people who filmed them.
- ✅ 1 year warranty, honored. Details below.
- ✅ Installation available as a separate service. The $1,900 price is for the module only. If you would rather not do high voltage work, bring the car to our Baltimore shop and we will quote the install.
The Warranty In Plain English
| Term | 12 months from the delivery date |
| Covered | The module fails in normal use: we send a replacement at no charge |
| Not covered | Labor, return shipping to Baltimore, and damage from installation errors such as connecting under high voltage |
| How to claim | Email support@youcanic.com or call 1-888-959-4265 with your order number and fault codes. We confirm the failure with you and arrange the replacement |
| Who honors it | YOUCANIC, 606 Baltimore Avenue, Towson, Maryland, in business since 2015 |
Many online listings for this module advertise a 1 year warranty. eBay's own buyer protection ends 30 days after delivery; past that, the warranty is whatever the seller decides to honor. We hear from S400 owners every month whose module from another seller failed a few months in, who could not get a reply, and who are now paying for the part and the labor a second time. If a module we rebuilt fails inside a year, you get another one.
Installation Notes
- • High voltage. Disable the hybrid system and confirm zero voltage at the module before disconnecting anything, exactly as shown in the video. Wear insulated gloves. This is not a job to improvise.
- • Check the 12 V battery first. A weak 12 V battery causes hybrid faults that look like a module failure. Test and charge it before condemning anything.
- • Inspect the connectors and cooling lines when the old module is out. Corrosion or a coolant leak at the module will take out the replacement too.
- • Scan afterward. Clear the stored hybrid codes and confirm the car enters Ready mode and charges. The UCAN-II Pro reads the S400 hybrid modules.
- • Want us to do it? Installation is not included in the $1,900 price; it is a separate service at our Baltimore shop. Call 1-888-959-4265 for an installation quote.
Specifications And Fitment
| Part | Hybrid power electronic module (inverter and converter assembly) |
| Condition | Rebuilt to OEM specification and tested by YOUCANIC |
| Fits | Mercedes-Benz S400 Hybrid and S400L Hybrid, W221, model years 2010, 2011, 2012 and 2013 |
| Part numbers | A2215404450, A0045459701, A0009064703, A0009064001 |
| Also written as | 221 540 44 50, 004 545 97 01, 000 906 47 03, 000 906 40 01 |
| In the box | One rebuilt power electronic module |
| Price includes | The module and technician support. Installation is not included; it is available at our Baltimore shop as a separate, quoted service |
| Warranty | 12 months, free replacement; labor and return shipping not covered |
| Shipping | Ground from Baltimore, Maryland; local pickup by appointment |
| Weight | About 25 lb |
Frequently Asked Questions
How do I know it is the module and not the hybrid battery?
Read the codes with a scanner that reaches the hybrid modules. Codes in the power electronics or inverter control unit, DC to DC converter faults, or communication faults between the power electronics and the battery point here. Codes about cell voltage, cell balance or battery state of health point to the battery. If you are not sure, email the codes and VIN to support@youcanic.com before you order.
Does it need programming or coding?
Install it and scan the car. If the module needs a coding step for your VIN our technicians will walk you through it; call us when the part is in the car.
Do I need to send my old module back?
Contact us before you order if you have a core to return; we will tell you the current arrangement.
Does the price include installation?
No. $1,900 is for the module only, shipped to you or picked up in Towson. Installation at our Baltimore shop is a separate service with its own quote; call 1-888-959-4265.
Can my local mechanic install it?
Yes, if they are comfortable with high voltage hybrid work. Send them the video above. They can call us during the job.
What if the car still does not start after the module is installed?
Call us with the new codes. The usual causes are a weak 12 V battery, a hybrid battery that was also failing, or a connector problem. We diagnose these every week and will help you find it.
How does a warranty claim work?
Email or call with your order number and the codes. We confirm the failure with you, you ship the module back to Baltimore, and we send a replacement. Labor and return shipping are the only costs not covered.
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