Valvetronic servo motor replacement cost
N52, N55, B46/B48, B58 and related Valvetronic engines
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Price summary
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| Independent shop | No price yet. |
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Before tax and shop fees. Prices vary by region, parts brand and what's included.
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Symptoms
- Check-engine light with Valvetronic adjustment / eccentric-shaft faults
- Reduced power or "engine malfunction" with Valvetronic deactivated
- Hard start, rough idle or misfires when the motor sticks
- Clicking from the valve cover area on some failures
Which cars are affected
Applies to Valvetronic BMW engines (N52, N55, B46/B48, B58 and related). Labor and whether the eccentric shaft is also needed change the bill. Sourced shop prices are still being collected from original posts.
E90 3 Series 2006–2013 E70 X5 2007–2013 F10 5 Series 2011–2016 F15 X5 2014–2018 F25 X3 2011–2017 F30 3 Series 2012–2019 F32 4 Series 2014–2020 G01 X3 2018–2024 G05 X5 2019–present G20 3 Series 2019–present G30 5 Series 2017–2023
The Valvetronic servo motor sets intake valve lift. A motor-only job is much cheaper than motor plus eccentric shaft and bearings. Dealers and shops sometimes quote both together after pulling the valve cover; ask which parts failed and whether coding / run-in with ISTA is included. A cracked valve cover can cause similar idle and air-metering symptoms, so confirm the diagnosis. We do not yet have three independent original reports for each shop type on a clean motor-only job, so no numeric fair range is published.
See also: N55 valve cover replacement cost
See also: B58 valve cover and PCV cost
BimmerFest: N52 Valvetronic actuator motor discussion (pending re-read)
xBimmers: N55 Valvetronic servomotor quote thread (pending re-read)
Bimmerpost F30: Valvetronic motor and eccentric shaft quote thread (pending re-read)
DIY meter
4/5 Advanced: lift and special tools
- Tools you'll need
- ISTA for Valvetronic run-in / adaptations
- Torque wrench
- Injector tools on some engines
- Coding / scan tool
- Valvetronic adaptations / run-in with ISTA or equivalent
- What it involves
- Access the servo motor at the valve cover. Some engines need injectors or the cover disturbed; run-in with a scan tool follows.
- Risks and when to use a shop
- Eccentric-shaft wear can turn a motor job into a much larger repair. A cracked valve cover can mimic Valvetronic symptoms. Confirm the diagnosis before buying parts.
- DIY guides
- N55 Valvetronic servomotor estimate discussion (xBimmers)
F30 Valvetronic motor and eccentric shaft quote thread (Bimmerpost F30)
The rating is based on the public DIY guides and BMW procedure documents linked above. Guides aren't ours; follow BMW's repair instructions and torque specs, and work safely.
Indie shops near you
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Related repairs
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ZF 8HP automatic behind the N55, B58 and others · indie est. $535–$789 · dealer est. $1,080–$1,515VANOS solenoids (intake / exhaust)
N20, N52, N54, N55, B46/B48, B58 · indie est. $549–$703 · dealer est. $973–$1,199B58 / B48 oil filter housing (coolant leak)
B58 and B46/B48 · indie est. $1,225–$2,101 · dealer est. $2,465–$4,010B58 valve cover / PCV failure
B58; one B46/B48 point included and labeled · indie est. $1,248–$2,352 · dealer est. $3,128–$5,052All repair prices → · Dealer vs independent prices for every job
Before you pay, check the VIN for recalls. Some failures are covered by a safety recall or a BMW warranty extension.