How to Replace Bosch Washer 2000W Heating Element

How the element fails#

The element sits in the bottom of the outer tub, held by a rubber gasket that a center nut squeezes for a watertight seal. Hard-water scale builds on the coil, insulates it, and drives localized overheating until the nichrome wire burns through — an open circuit, so cold washes and often an E05. A cracked element can instead short to its casing and trip the breaker. This repair covers the Bosch WAT, WAS, WAW, and WGA front-load series.

Tools, part, and safety#

• Tools: Torx T20 screwdriver, flathead screwdriver, a 10mm socket (center nut), multimeter, towels, a shallow pan
• Part: Bosch 2000W element (model-specific BSH number)
• Safety: Disconnect power AND water. The element runs at 240V, water pours out when it comes free, and you should wait three minutes after unplugging for the capacitor to bleed down.

Step-by-step#

1. Confirm the element failed#

Reach the element terminals from the front or below and pull the two spade wires. Across the terminals a healthy element reads about 24-32 ohms; an open (OL) means it is burned out; a very low 0-5 ohms means an internal short — replace it. Then check for a ground fault: from either terminal to the metal casing you want an open reading. Any resistance there means current is leaking to ground, which is what trips your breaker.

2. Reach the element#

On most Bosch front-loaders you go in from the front:

1. Top panel — two Torx T20 screws at the rear, slide it back off its front hooks, lift away.
2. Control panel — two or three Torx T20 screws from above, tilt it forward on its lower clips.
3. Door gasket — release the wire spring clamp at the 6 o'clock position with a flathead and peel the gasket lip inward.
4. Front panel — the Torx T20 screws behind the lower service flap and along the top, then unplug the door-lock wiring.

The element flange, its two terminals, a ground terminal, and the center compression nut are now at the bottom of the tub. Quick alternative: lay the machine on its back on towels and reach the element through the base opening without pulling panels.

3. Remove the old element#

Pull the two spade wires (interchangeable on a resistive element), the green/yellow ground wire, and the NTC sensor's 2-pin connector if one lives in the element housing. Set the pan under the flange. Loosen the center nut two or three turns counterclockwise but do NOT remove it; push the center bolt gently inward to relax the gasket, then wiggle the element straight out. Expect one to three liters of tub water to drain. Heavy white scale on the coil confirms the usual cause.

4. Fit the new element#

Set old and new side by side to confirm length, terminal layout, and gasket diameter. Scrape scale off the tub's sealing rim. Smear a thin film of dish soap on the new gasket so it slides in, then push the element home until it seats in the internal guide bracket that keeps it off the spinning drum. Tighten the center nut clockwise to firm resistance plus about a quarter turn — that spreads the gasket against the hole. Do not overtighten, or you split the gasket or crack the tub.

5. Reconnect and reassemble#

Refit the spade wires, ground wire, and NTC connector, tugging each to be sure. Rebuild in reverse: front panel (door-lock connector first), gasket clamp (hook it at 12 o'clock, work around, tension at 6 o'clock), control panel, top panel.

6. Test#

Run a hot cotton cycle (60°C or 90°C). After ten to fifteen minutes the door glass should feel noticeably warm, and there should be no drip at the element flange through the whole cycle. A slow weep means the gasket wants another quarter turn on the center nut.

Troubleshooting#

• E05 with the new element: the NTC sensor may be disconnected or bad — the board disables heat without it; it reads roughly 50,000 ohms at room temperature.
• Breaker trips at once: a ground fault in the new (defective) element — disconnect its wires and reset; if it holds, return the part.
• No heat, no error: the selected temperature must be above about 30-40°C to switch the element on, and the control-board heating relay must be good.

When to call a professional#

Get help if a known-good element still will not heat (an NTC, relay, or board fault), or if the tub or the gasket seat is cracked.