# TSH-575IGBT IGBT Replacement Module for Audi Continental iBSG Generators<\/p>\n
This high-quality TSH-575IGBT module is specifically designed for the repair of 48V starter-generators (iBSG) manufactured by Audi Continental. This replacement part targets one of the most common failure points in the mentioned units, enabling service centers to avoid complex and costly full unit replacements. Stremtec proudly offers this spare part as one of the first on the market, helping to repair the phenomenon known as the \u201emild-hybrid catastrophe\u201d.<\/p>\n
## Overall Compatibility<\/p>\n
The TSH-575IGBT module can be used for units with the following Audi Continental iBSG part numbers:<\/p>\n
| OEM Part Number | Description |
\n| :— | :— |
\n| 4N0903028P | Starter-Generator Part |
\n| 4N0903038J | Starter-Generator Part |
\n| 4N0903028R | Starter-Generator Part |
\n| 4N0903028N | Starter-Generator Part |
\n| 4N0903028PX | Starter-Generator Part |
\n| 4N0903028H | Starter-Generator Part |
\n| 4N0903028M | Starter-Generator Part |
\n| 4N0903028Q | Starter-Generator Part |
\n| 4N1903028A | Starter-Generator Part |
\n| 4N0903028D | Starter-Generator Part |<\/p>\n
## Main Features and Advantages<\/p>\n
This replacement IGBT module directly addresses the main cause of failure that leads to the premature failure of the starter-generators.<\/p>\n
* **Direct Repair:** Enables the repair of the iBSG unit without needing to replace the entire generator, resulting in significant cost savings.
\n* **Easy Installation:** The module is easy to install, and an installation video is available to assist with professional replacement.
\n* **Reliability:** The module is designed to withstand thermal damage caused by overcurrent, which is the primary reason for the failure of original parts.<\/p>\n
## Common Failures and Diagnostics of 48V Starter-Generators<\/p>\n
Problems with the 48V starter-generator (iBSG) found in Audi vehicles have been known for a long time and often lead to vehicle immobilization. Although dealerships previously carried out recalls, in the case of later failures, the repair costs are borne by the owners.<\/p>\n
### Symptoms and Error Messages<\/p>\n
Faults detected by the driver are often general in nature and do not always directly indicate an alternator failure. Messages appearing on the dashboard often relate to the following systems:<\/p>\n
1. Main electrical network (Mains)
\n2. Start-Stop system
\n3. Brake power booster and other components directly connected to the starter-generator or the 48V battery.<\/p>\n
The most common ECU error codes readable with diagnostic tools in case of 48V system failure:<\/p>\n
* **P065C00:** Generator mechanical characteristics \u2013 Intermittent operation
\n* **U046900:** Starter-Generator control unit, invalid signal (36564)
\n* **P0CA700:** Hybrid drive battery, excessive discharge current
\n* **U046900:** Starter\/Generator control unit, invalid data received<\/p>\n
### The Real Cause of Failure<\/p>\n
Although some recalls officially cited moisture-induced corrosion, the actual problem was **excessive operating current**. This current caused overheating in the power transistors (IGBTs), leading to the burnout of the control board.<\/p>\n
**Consequences:**
\nWhen the alternator fails, it almost always completely drains the 48V battery. This battery switches into protection mode, which results in the immobilization of the vehicle. It is important to note that in such a case, installing a new alternator alone will not solve the problem: the battery's protection status must be released using an ODIS diagnostic tool. Furthermore, deep discharge of the high-voltage battery can cause cellular-level damage, which is irreversible.<\/p>\n
## Important Installation Precautions on the Vehicle<\/p>\n
To ensure the successful and durable operation of the new IGBT module, the following vehicle-related specifications must be strictly observed:<\/p>\n
1. **48V Battery State of Charge Level:** For starting the vehicle, the 48V lithium battery must be charged to at least a 70% state of charge (approx. 49.5V). Although the motor may start at a lower voltage, this can cause severe damage to the generator. Photographic evidence of the state of charge level is required.
\n2. **Coolant Filling Method:** The coolant must be filled using the **vacuum filling method**. Simple filling followed by bleeding with a computer only removes air from the engine water jacket. Air may still remain in the generator water jacket. Improper bleeding leads to severe heat transfer problems, drastically reducing the lifespan of the new IGBT module. This is especially critical because the original IGBTs had a lower current rating.<\/p>\n
**ATTENTION:** If the above precautions are not followed, the replacement of all other components may become necessary.<\/p>\n
## Technical Data (TSH-575IGBT)<\/p>\n
Since this is a spare part, the most important technical parameters relate to the built-in semiconductors that ensure adequate performance and heat management.<\/p>\n
| Parameter | Value | Remarks |
\n| :— | :— | :— |
\n| Type | IGBT Module | Replacement module for Audi Continental iBSG |
\n| Application | 48V Starter-Generator Repair | Audi Start\/Stop systems |
\n| Voltage Class | 575V (Nominal) | Nominal voltage of the module |
\n| Current (Collector) | Specific data depends on the manufacturer | Optimized for the designed operating current range |
\n| Installation | Easily installed | Installation guide available |
\n| Brand | Rotrix (Distributed by: Stremtec) | Repair purpose component |<\/p>\n
This TSH-575IGBT replacement part offers a crucial solution for one of the most common and costly failures in modern Audi mild-hybrid systems, ensuring professional and economical repair.<\/p>","protected":false},"excerpt":{"rendered":"
High-quality TSH-575IGBT module for the repair of Audi Continental 48V iBSG starter-generators. Professional spare part for reliable operation.<\/p>","protected":false},"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[366],"product_cat":[12998],"product_tag":[],"class_list":["post-363002","product","type-product","status-publish","product_brand-stremtec","product_cat-egyeb-termekek","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/product\/363002","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/comments?post=363002"}],"version-history":[{"count":1,"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/product\/363002\/revisions"}],"predecessor-version":[{"id":372070,"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/product\/363002\/revisions\/372070"}],"wp:attachment":[{"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/media?parent=363002"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/product_brand?post=363002"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/product_cat?post=363002"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/met-industry.hu\/en\/wp-json\/wp\/v2\/product_tag?post=363002"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}