If your Mercedes is showing “Service Brake — Visit Workshop”, the SBC pump (the Sensotronic hydraulic brake unit) is nearly always the cause. I repair these units directly: rebuild-by-post for £430, an exchange unit for £700 (no need to return your old one), or mobile on-car repair from £650 — all on a no fix, no fee basis. No call centre, no middleman. You deal with me, the technician who actually does the work.
I’m based in Basingstoke and cover London and the South East for mobile jobs, with over 280 Google reviews from Mercedes owners. Here’s what the fault actually is, what your options cost, and how to get it sorted.
What “Service Brake — Visit Workshop” Actually Means
The SBC (Sensotronic Brake Control) system uses an electro-hydraulic pump instead of a conventional brake servo. The pump has a finite service life, and when it wears out the car logs fault codes and puts the warning on the dash. The codes that point to pump wear are C249F, C235A, C235C and C2498.
If you’ve had the car scanned and want to check what your codes mean, see my Mercedes SBC fault codes guide. If you haven’t scanned it yet, don’t worry — the dash message plus the symptoms are usually enough for me to tell you what’s going on.
Your Repair Options and What They Cost
Three ways to do this properly, plus one option people often ask about. Prices are fixed — no “from £X, final bill £2X” games.
1. Rebuild by post — £430
You remove the unit (or have a local garage do it), send it to me, and I rebuild your own pump: strip-down, replacement of the worn parts, testing, and counter reset before it goes back. This is the cheapest route and you keep your original unit, which stays coded to your car. Full details on the SBC pump repair page.
2. Exchange unit — £700, no core return
If you can’t be off the road while yours is rebuilt, I supply a reconditioned exchange unit for £700. Unlike most exchange schemes, you don’t have to send your old unit back — no core charge hanging over you. See the SBC exchange unit page for details and availability.
3. Mobile on-car repair — from £650
I come to you, do the job on the car, and you’re back on the road the same day — no removing the unit, no courier, no garage bills either side. Available across London and the South East from my Basingstoke base. Details on the mobile SBC repair page.
Counter reset only — £120 (contact me first)
The SBC system counts pump activations and triggers the warning at a set threshold. A reset clears the message — but a reset on its own does not fix a worn pump. If the hardware is tired, the warning comes back and you’ve spent £120 to delay the real job. It only makes sense in specific situations, which is why I do it by arrangement only — message me first and I’ll tell you honestly whether it’s worth doing on your car.
Not sure which option fits your car?
Talk directly to the technician who actually does the work — no forms, no call centre. Send me your dash message or fault codes and I’ll tell you straight what it needs.
Why Every “New” SBC Pump Is Actually Reconditioned
Bosch stopped manufacturing SBC pumps around 2012. That means every replacement unit sold anywhere — main dealer included — is a reconditioned one. Nobody can sell you a genuinely new pump, because they don’t exist.
So the real question isn’t “new or recon”. It’s who does the reconditioning, what it costs, and whether you can talk to that person. A dealer route puts a parts department and a service desk between you and whoever rebuilt the unit. Here, the person who rebuilds it is the person who answers the phone.
Part Numbers I Repair
I repair the common Bosch SBC hydraulic units, including these part numbers:
- 0265 250 067, 0265 250 065, 0265 250 077, 0265 250 092
- 0265 960 019, 0265 960 025, 0265 960 035, 0265 960 012
The part number is printed on the unit’s label. If yours isn’t listed, check the full SBC part numbers reference or just send me a photo of the label.
No Fix, No Fee — What It Means
Exactly what it says: if I can’t restore your unit to full working order, you don’t pay for the repair. I look at the unit, tell you what I’ve found, and you only pay when the job is done. It’s brakes — you shouldn’t be gambling on it, and neither should I be paid for a job that didn’t work.
How the Postal Rebuild Works
- Get in touch first. WhatsApp or call me with your model, year and symptoms (part number too, if you have it) so I can confirm the price and what to expect.
- Remove and package the unit. Plenty of padding and a sturdy box — these units don’t like being rattled around in transit.
- Send it to me. Use a tracked courier. I’ll confirm the address and let you know when it arrives.
- Rebuild and test. I strip the unit, replace the worn parts, test it and reset the counter.
- Back to you. The unit is returned ready to refit. After refitting, the brake system needs bleeding — if your garage needs guidance, I’m a message away.
Frequently Asked Questions
How much does Mercedes SBC pump repair cost in the UK?
With me: £430 for a rebuild of your own unit by post, £700 for a reconditioned exchange unit (no core return), or from £650 for mobile on-car repair. All no fix, no fee.
Can I send my SBC unit by post for repair?
Yes — the £430 rebuild-by-post service is the most popular option. Contact me first, pack the unit well, and send it tracked. The steps above cover the whole process.
Can I just have the SBC counter reset instead of a repair?
I offer a counter reset for £120, by arrangement only — but I’ll be straight with you: a reset does not repair a worn pump. If the hardware is at the end of its life, the warning will return. Message me first and I’ll tell you whether a reset makes any sense for your car or whether it’s money down the drain.
Why can’t I buy a new SBC pump anymore?
Bosch ended SBC pump production around 2012. Every replacement on the market since then — dealer or independent — is a reconditioned unit. What matters is the quality of the rebuild and who stands behind it.
Which Mercedes models have the SBC system?
The W211 E-Class, R230 SL and W219 CLS. If you drive one of these and see “Service Brake — Visit Workshop”, it’s the SBC system.
What if you can’t fix my SBC unit?
Then you don’t pay for the repair — that’s the no fix, no fee guarantee. If your unit turns out to be beyond economic rebuild, the £700 exchange unit is usually the fallback, and I’ll talk you through it before anything is decided.
Ready to sort your SBC pump? Ask John first.
Talk directly to the technician who actually does the work — no forms, no call centre. Tell me your model and what the dash is showing, and I’ll give you an honest answer on the best option: £430 postal rebuild, £700 exchange, or mobile repair from £650.
