Uploaded June 2019 | Updated September 2026, 2 weeks ago

---

Link to purchase item: x8r.co.uk/mercedes-sl-s-cl-r230-w220-c215-pse-central-locking-vacuum-pump-motor-impeller.html?utm_source=youtube&utm_medium=social&utm_campaign=analytics

Symptoms

Central locking not unlocking doors, boot not popping open, lumber supports in seats not operating, soft close boot not working.
Key fob won't lock or unlock any door, including rear hatch. (Key fob is perfectly operational otherwise)
Pressing door lock/unlock buttons inside the car fails to lock or unlock any door.
You can hear vacuum pump motor working but nothing is happening, motor runs for too long then cuts out. Vacuum pump makes clicking sound when you press lock/unlock on key fob.

Fault

A graphite impeller within the vacuum pump fails causing vehicle faults.

Sometimes water ingress can cause problems with these pumps, often however the impeller on the spindle of the motor can break or shatter over time. A broken impeller will cause a lack of air pressure / vacuum to be provided meaning actions of the PSE pump will be inhibited. It can also lead to a jammed motor which will lead to the pump blowing the 20A fuse and shutting off.

Common associated fault codes:
B1436-012, B1436-014, B1436-015, B1436-016, B1436-017, B1437, B1438-011, B1438-012, B1440, B1442-012, B1442-015, B1442-016, B1442-017, B1442-018.

Solution

Install our replacement impeller and restore your vacuum pump

Dealers will try to sell you a complete new PSE pump at great expense (£900+), but our solution simply replaces the component part that has failed; the motor impeller. This repair with our replacement graphite impeller wheel and new fins will get your pump back to full working order at a fraction of the cost. Our parts are made of an improved Graphite material. Replace just the component that fails, avoid the cost of a whole new PSE pump assembly that would just fail again. Install of our new component is straight forward please check out our instructions and video.

Vehicles affected

Mercedes Benz SL-Class (R230) 2001-2011
1st gen: 2001- 2006 – SL350, SL500, SL600, SL55AMG, SL65AMG
Facelift 1: 2006 - 2008 – SL350, SL500, SL550, SL600, SL55AMG, SL65AMG
Facelift 2: 2008 - 2012 - SL280, SL300, SL350, SL500, SL550, SL600, SL63AMG, SL65AMG
Mercedes Benz S-Class (W220) 1998-2005
S280, S320CDI, S320CDI L, S350, S350 L, S400CDI, S430, S430 L, S500, S500L,
S500 4-Matic, S600L, S55 AMG, S55 AMG L
Mercedes Benz CL-Class (C215) 1999-2006
CL500, CL600, CL55AMG, CL63AMG, CL65AMG

This information is for guidance only, to be sure visit real OEM, click Mercedes catalogue, select your vehicle model, then select your variant, click Vacuum System / Hydraulic System, click Vacuum pump, this will show the part number for your vacuum pump. You can then compare to the part numbers below to confirm compatibility. Alternatively, you can visually inspect the unit for the part number.

Associated part numbers
Bosch motor part number: 1397220291
Mercedes pump part numbers:
A2308000648, A2308000548, A2308000448, A220800348, A2208000648, A2208000748, A2208000548, A2208000848, A2208001148, A2208001248, A2208000948.

You will receive

1 x Graphite impeller wheel
8 x Graphite replacement fins