Bosch MAP Sensor 0261230189 for Mercedes‑Benz — OEM-Quality, Improved Chip & Chem-Resistant Coating

The BOSCH 0261230189 is an OEM-quality Manifold Absolute Pressure (MAP) sensor engineered to restore precise intake-air pressure readings for compatible Mercedes‑Benz and similar vehicles.

This Bosch MAP sensor measures the absolute pressure inside the intake manifold and converts that information into an electrical signal the engine control unit (ECU) uses to fine-tune fuel delivery and ignition timing. Built to Bosch original-equipment standards, the 0261230189 model uses improved chip technology and a chemically resistant coating to deliver long service life and consistent readings across a wide range of operating conditions.

How does this MAP sensor affect engine performance?

A MAP sensor supplies the ECU with real-time intake manifold pressure data so the engine can calculate air mass and adjust fuel and timing accordingly. When the sensor is accurate, you get smoother idle, better throttle response, and more predictable engine behavior under load.

• Precise pressure measurement supports correct air-fuel ratio across RPM ranges.
• Improved driveability during acceleration and steady cruising.
• Reduces the risk of rough idle or stumbling caused by incorrect pressure input.

Will this Bosch part fit my Mercedes‑Benz model?

This part is listed as compatible with a wide set of Mercedes‑Benz and related models across many years, including B, C, CL, CLK, CLS, E, G, GL, GLE, GLK, GLS, ML, R, S, SL, SLK, Maybach, and selected Sprinter chassis. Always cross-check the Bosch part number 0261230189 with your vehicle’s year, engine code, and OEM part reference to confirm fitment.

• Check the Bosch part number against your VIN or vehicle parts catalog.
• Verify compatibility for specific years and trims shown in the fitment list.
• Consult a technician if your vehicle has aftermarket engine modifications.

How durable and reliable is the Bosch MAP sensor?

Bosch designs these sensors to meet or exceed original-equipment specifications, using a protective coating and updated chip technology to resist intake-manifold contaminants and maintain accurate readings over time. The robust housing and internal circuitry are optimized for automotive thermal and chemical exposure.

• Chemical-resistant coating reduces corrosion from oils and fuel vapors.
• Advanced sensor chip improves signal stability and longevity.
• Manufactured to OE tolerances for consistent replacement performance.

How do I install and test this sensor?

Installation is typically straightforward: disconnect the battery, remove the electrical connector and mounting screws, replace the sensor, then reconnect and clear any stored codes. After installation, verify proper operation by checking live MAP readings with a scan tool and ensuring there are no diagnostic trouble codes related to manifold pressure.

• Follow vehicle-specific torque and connector handling procedures.
• Clear ECU codes and perform a short drive cycle to confirm stable readings.
• If problems persist, inspect vacuum lines and intake for leaks that mimic sensor faults.

Who is this for: The Bosch 0261230189 MAP sensor is suited for professional mechanics, DIY enthusiasts, and owners of compatible Mercedes‑Benz models who need an OEM-grade replacement to restore accurate intake pressure sensing. It’s a good choice when diagnosing drivability issues linked to air-fuel calculations, or when replacing aging engine sensors to maintain factory performance and economy.