Vehicle Electrification Market

The shift toward centralized and zonal E/E architectures is changing electric auxiliaries from standalone components into software-controlled actuators. Instead of an electric water pump, oil pump, A/C compressor, or vacuum pump operating primarily according to a fixed component-level control strategy, the vehicle computer can coordinate their operation using real-time inputs such as battery state, thermal loads, vehicle speed, and powertrain operating conditions. Bosch specifically describes its centralized architecture as separating “thinking” in the vehicle computer from “acting” through zone ECUs, sensors, and actuators, creating a common platform for cross-domain functions. This creates additional value for components in the scope because software can dynamically determine when and how much auxiliary capacity is required, rather than simply switching components on/off. For example, coolant-pump speed, compressor output or thermal-system operation can be coordinated with battery/e-drive thermal requirements, while the same vehicle computer can host thermal-management functions alongside powertrain and chassis controls. The value proposition is shifting from “electrifying the auxiliary” to “making the auxiliary software-controllable” — increasing the importance of variable-speed motors, electronic controllers, diagnostics, communication interfaces and integrated control algorithms across pumps, compressors, steering, braking and thermal-management systems.

The market is constrained by the coexistence of 12V, 48V, and high-voltage architectures across vehicle platforms, which prevents a uniform migration path for electric auxiliaries. A vehicle may require 48V for high-power loads while retaining a large installed base of 12V pumps, actuators, and ECUs, requiring DC/DC conversion, additional power distribution, and multiple component variants. Bosch specifically notes that 48V is not a simple drop-in replacement for 12V and that the optimal architecture depends on the number of 48V components and the extent of zonal power distribution. This restraint is particularly relevant to EPS/EHPS, electric pumps, e-compressors, PTC heaters, electric vacuum pumps, and ISGs, because their addressable market increasingly depends not just on whether the vehicle is electrified, but on which E/E and powernet architecture the OEM has selected for each platform. The issue becomes more significant as auxiliaries become networked, software-controlled, and safety-relevant. Electric pumps, compressors, steering, and braking actuators increasingly need communication, diagnostics, cybersecurity, and functional-safety capabilities in addition to the motor itself. Bosch notes that increasing electrification raises requirements for functional safety and energy-supply reliability, while Continental highlights the challenge of managing the rapidly expanding software scope and the need for standardized interfaces in zonal architectures.

The biggest opportunity for the Tier I suppliers in the market is to move up the value chain from supplying individual electric auxiliaries to supplying integrated, electronically controlled auxiliary/thermal modules. As OEMs adopt centralized E/E architectures, electric pumps, compressors, valves, heaters, and actuators can be coordinated through vehicle controllers based on real-time thermal and energy requirements. Bosch's vehicle control unit, for example, combines 48V/HV coordination, thermal management, diagnostics, and powertrain control, indicating that auxiliary functions are increasingly becoming part of the vehicle's central control architecture. This creates a significant opportunity for suppliers to combine hardware + electronics + sensing + control software rather than competing only on the motor/pump/compressor. MAHLE provides a concrete example: its integrated thermal-management module combines the e-compressor, heat exchanger, coolant pumps, sensors, and valves, while its intelligent thermal-management system for Mahindra's XEV 9e/BE 6 uses software-based control and reduces e-compressor power consumption by 15–20%. MAHLE also secured two thermal-module orders worth almost €1.5 billion, demonstrating that OEM purchasing is moving toward higher-value integrated thermal solutions. The market opportunity is shifting from electrifying individual auxiliaries to supplying integrated, software-controlled auxiliary systems, enabling suppliers to capture additional value through electronics, sensing, controls, and system integration rather than competing solely on component hardware

The strategic importance of 48V is not simply that it provides more electrical power. It acts as a bridge between legacy 12V systems and high-voltage electrification. At the same power output, moving from 12V to 48V reduces current by four times, enabling smaller cables, terminals, and connectors. The problem for OEMs is that a 48V component cannot simply replace every 12V component. The problem for OEMs is that a 48V component cannot simply replace every 12V component. A modern vehicle may therefore require: HV battery → DC/DC → 48V network → 48V loads. The issue is not simply component cost. OEMs must determine which functions should remain at 12V, migrate to 48V, or operate directly at HV, while simultaneously maintaining compatibility with existing platforms. This leads to multiple voltage domains, more power-conversion hardware, more component variants, more wiring/connectivity requirements, greater validation burden, and higher architecture complexity.