Make-specific support
Porsche repair and diagnostics in Mays Landing, NJ
Eight bays, foreign and domestic, with PIWIS-compatible scan tooling and the routine Porsche work the dealer should not need to do.
Scheduled maintenance and fluids
Oil and filter at the Porsche factory interval, brake fluid flush on DOT 4, spark plug replacement, OEM coolant, cabin and engine air filters.
Common examples: Oil + filter, factory weight, Brake fluid every 2 yrs, Spark plugs, factory interval, OEM coolant + filters
PIWIS-compatible diagnostics and electrical
Check engine light and PSM diagnostics, full-module Opus + Porsche-protocol scan, freeze-frame and live data, battery registration after every 12V replacement.
Common examples: Full-module scan, PASM + chassis faults, Battery registration, PCM + PCCM diagnostics
Brakes, suspension, and PDK
Brake pads and rotors on conventional Porsche brakes, PASM and Cayenne / Panamera air-suspension diagnostics and repair, and PDK transmission fluid service with adaptation refresh.
Common examples: PDK fluid + adaptation, Air suspension, Conventional brake service, Steering angle calibration
Referred to the dealer or to a marque-specialty shop
Recall reflashes, PPN online flashes, software updates and module reprogramming on most newer chassis, key programming on newer chassis, warranty work, and HV battery work on Macan and Cayenne hybrid trims go to the Porsche dealer. GT-line cars (GT3, GT4, GT2, Cayman GT4), Cup work, and PCCB ceramic brake first install go to a marque-specialty performance shop. We help coordinate the handoff.
Common examples: Recall + PPN flashes, Key programming, HV battery work, GT-line + Cup + PCCB first install
If you have a Cayenne with a coolant smell, a Boxster with a check engine light, a Macan that needs a 30,000-mile service, or a 911 with an AOS rattle on cold start, we have done that work in this shop.
Signs your Porsche needs service
Most Porsche owners only call a shop when something on the dash, under the hood, or under the car has changed. Here are the eight symptoms we see most often, and what each one usually means before we put the car on the lift.
Check engine light, steady or blinking
Steady is a stored emissions or powertrain fault. Blinking means an active misfire severe enough to damage the catalytic converter. Stop driving on a blinking light. PIWIS-compatible scan reads the freeze-frame data the generic OBD-II reader skips.
PASM warning or chassis-system fault
Adaptive damping has dropped out and the dampers are stuck at one rate. Common cause: a height sensor, a damper electrical connector, or a software-version mismatch after a battery replacement that was never registered.
Cayenne or Panamera sitting low overnight
Slow air leak in that corner's strut or air line. Get it scanned before the compressor burns out chasing the leak. The system has a leak and the pump runs constantly.
PDK shifting hard or staying in one gear
PDK drops into limp mode to protect itself from internal damage. Usually a mechatronic fault, a fluid issue, or a sensor that has fallen out of range.
Coolant smell with no visible puddle
On the Cayenne V8 (95-series engines), plastic coolant pipes inside the valley crack with age and heat. Faint coolant smell first, visible drip later. On 911 and Boxster M96 / M97 engines, AOS failure pushes oil and coolant vapor where it should not be.
Cold-start rattle or oil consumption on AOS-prone engines
AOS is a sealed diaphragm that fails predictably on M96, M97, and 9A1 platforms. Cold-start rattle is one tell. Elevated oil consumption with no visible leak is another.
PSM, ABS, or airbag light on
Stability, anti-lock, and supplemental restraint systems are off-line. Traction in rain or snow drops. SRS light disables the airbags. Diagnose before the next drive.
PCM / PCCM infotainment glitch after a 12V swap
Most often a 12V battery that was replaced and never coded to the body control module. Without coding the alternator runs the wrong charging profile, the new battery wears early, and modules log false faults.
Rough idle, hesitation, or misfire on direct-injection engines
Direct-injection 911 and Cayenne engines (9A1, MA1, and later) accumulate carbon on the intake valves over time because fuel never washes the back of the valve the way it does on a port-injected engine. Symptoms: rough idle, hesitation under load, misfire counts climbing on one or two cylinders. Often shows up before the check engine light. Coil pack and fuel-trim drift are the other two usual suspects on the same complaint.
Two or more at once, do not wait. Most Porsche faults are easier and cheaper to address while the failure is still partial.
Porsche service for Mays Landing and Atlantic County drivers
Same family, same eight bays, same corner of Mays Landing since 1981. We serve Hamilton Township, Egg Harbor Township, Northfield, Somers Point, Folsom, Buena Vista, and the rest of Atlantic County. Porsche owners drive in from Linwood, Margate, Ventnor, Longport, and Galloway because the closest Porsche dealers are 45 minutes to an hour up the Garden State Parkway.
The shop is family-owned and woman-owned. Nancy Kneble runs the front. Fred Kneble has been turning wrenches here for decades and holds ASE certification. AAA Approved status means independent quality and pricing audits, and that the written estimate has to match the work. South Jersey winters are hard on German cars: salt corrodes connectors, potholes on Black Horse Pike crack control arms, and humidity off the marshes degrades air-strut and damper rubber faster than the Stuttgart engineers planned for.
Helpful details to mention
- Vehicle year, model, and trim (Boxster S, Cayenne Turbo, Macan GTS, 911 Carrera S, etc.)
- Mileage
- Which dash light is on, or what the PCM / PCCM is showing
- What changed and when (sound, feel, smell, performance, ride height)
- Most recent dealer or shop visit and what they said
- Whether the car is still under factory or extended warranty
- Whether you have had a 12V battery replacement and whether it was registered
The more we know up front, the more accurate the estimate and the timeline.
Customer proof
Service was performed quickly and the Kneble Team provided great communication throughout the visit.Robert Orzechowski, Google review
Questions before scheduling?
Talk with us about Porsche
Tell us the model, year, mileage, and what changed. If it is routine, we book the visit and quote it on arrival. If it is dealer-only or specialty-only, we save you the trip and tell you where to take it.
Service guide
Porsche Service Guide
Topic-based reference for the Porsche models we service, the platforms and engines worth knowing, the dealer-vs-independent decision, and the warranty mechanics that protect the owner who chooses an independent.
In this guide
- What stays at Kneble's and what gets referred
- PIWIS-compatible diagnostics and why scan-tool naming matters
- Porsche models and platforms we service
- Common Porsche issues we see in Atlantic County
- Porsche dealer vs Kneble's: drive time and approach
- How Kneble's protects your Porsche warranty (Magnuson-Moss in plain English)
01 of 06, What stays
What stays at Kneble's and what gets referred
Kneble's services routine maintenance, brakes, tires, suspension (including PASM and Cayenne / Panamera air ride), electrical diagnostics, PDK fluid service, AOS replacement, water pump, throttle body adaptation, and drivability work on every modern Porsche platform we cover. The list of items that get referred out is short and honest.
Read more about What stays at Kneble's and what gets referred
Referred to the Porsche dealer
Active recalls and PPN online flashes, software updates and module reprogramming on most newer Porsches, key and immobilizer coding on newer chassis, warranty-covered repairs, and high-voltage battery service on Macan and Cayenne hybrid trims.
Referred to a marque-specialty performance shop
GT-line cars (GT3, GT4, GT2, Cayman GT4), Cup-car work, full PCCB ceramic brake first install and bedding. These need specialty fitment expertise and parts pipelines that an independent generalist should not pretend to have. Honest scope is the trust mechanic. The Magnuson-Moss Warranty Act protects an owner who uses an independent for routine service, but only when the independent respects the line.
02 of 06, PIWIS-compatible diagnostics
PIWIS-compatible diagnostics and why scan-tool naming matters
PIWIS is the Porsche Integrated Workshop Information System the dealer uses. The full PIWIS online environment is dealer-licensed; the diagnostic and adaptation procedures most owners need most of the time are accessible to PIWIS-compatible aftermarket tools. Kneble's runs Opus scan tool with Porsche protocol packs and PIWIS-compatible workflows for the procedures Opus does not cover natively. That combination reads every accessible module, runs the adaptations after parts are replaced, and clears codes so they do not re-set on the drive home.
Read more about PIWIS-compatible diagnostics and why scan-tool naming matters
A generic OBD-II scan on a Porsche pulls only the federal-emissions subset. The other 85 percent (transmission, chassis, comfort, body, infotainment) needs Porsche-protocol tooling. We run the same diagnostic depth as the dealer at independent labor, with a written estimate before any wrench turns, and we draw the dealer-only line for any procedure the independent should not run. See the broader check engine light diagnostics workflow for the OBD-II side of the process.
Need a Porsche diagnostic looked at this week?
Call (609) 625-3286From the shop library: Article How to Stop Rodents From Eating Your Vehicle’s Wires Video Beat the Cold: 4 Expert Tips to Power Up Your Electric Vehicle in Winter
Tell us what changed, when it started, and what you drive. We can help decide whether to start with an inspection, alignment check, or related repair.
03 of 06, Porsche models
Porsche models and platforms we service
The cars in scope cover most of the modern Porsche lineup that South Jersey owners are driving.
Read more about Porsche models and platforms we service
Boxster and Cayman
986, 987, 981, and 718 generations. Routine service, brakes, suspension, electrical, AOS and IMS-related work on the M96 and M97 engines, plus the more modern flat-six and flat-four platforms.
911 (light service)
996, 997, and 991 generations get routine maintenance, brakes, electrical, and most drivability work. 992 generation: routine service and brakes are in scope. GT-line 911 work (GT3, GT2) goes to a marque-specialty shop.
Cayenne (gas)
9PA, 92A, and 9YA generations. Plastic coolant pipes on the V8 95-series, water pump on the V6, PASM and air-suspension diagnostics, brakes, fluid service. The Cayenne diesel is a different story: we do not service diesel, so that work goes to a dedicated diesel specialist, and we will point you to one.
Macan
Routine service, brakes, water pump on the V6, electrical, suspension, infotainment glitches. Hybrid trims: routine work in scope; HV battery work goes to the dealer.
Panamera (light service)
Routine maintenance, brakes, suspension diagnostics, electrical, and most drivability work. Hybrid trims follow the Macan rule.
Out of scope
GT3, GT4, GT2, Cayman GT4 (specialty performance). Cup-car work (specialty performance). Taycan high-voltage battery and inverter (Porsche dealer); routine non-HV work on a Taycan can come in, but the HV work refers out.
04 of 06, Common Porsche
Common Porsche issues we see in Atlantic County
Some Porsche issues are platform-specific, some are mileage-specific, some are climate-specific.
Read more about Common Porsche issues we see in Atlantic County
IMS bearing on M96 and M97 engines
The IMS bearing is a well-documented concern on the 996 and early 997 platforms plus Boxster and Cayman 986 / 987 of the same era. The bearing supports the intermediate shaft that drives the cams; when it fails, the failure can be catastrophic. The honest summary we give the owner: the failure rate is real but not as common as forums make it sound. We do not push preventive replacement on a car that is not asking for it; we recommend it when the engine is already out for clutch or RMS work and the marginal labor is small.
RMS leak
Rear Main Seal weep on the M96 and M97 platforms. Small drip on the driveway, usually visible above the transmission bell-housing. Often paired with an IMS conversation because the transmission has to come out either way.
Cayenne V8 plastic coolant pipes (95-series)
The plastic pipes in the valley between the cylinder heads crack with age and heat. The early symptom is a faint coolant smell with no visible puddle. Replace with updated aluminum or improved-spec pipes during the same service window as the water pump.
AOS (Air Oil Separator) failure
Sealed diaphragm that fails predictably on M96, M97, and 9A1 platforms. Common tells: cold-start rattle, blue smoke on first start, elevated oil consumption with no visible leak, and a vacuum reading at the oil-cap port that is way off spec.
PASM and air-suspension faults
PASM dampers, air-strut leaks, and ride-height sensor drift cluster at higher mileage. Cayenne and Panamera with the air ride package see the most of this. Salt-air exposure from shore-area commutes accelerates the rubber wear.
PDK fluid neglect
PDK is a precision dual-clutch transmission. The fluid is the working surface; running it past the service interval shows up as a thunk on the 1 to 2 shift, hesitation under load, or a downshift that does not land cleanly. We do the fluid service on the factory schedule and run the adaptation refresh after.
PCM / PCCM glitches and 12V battery registration
Aging 12V batteries cause infotainment reboots, random electrical complaints, and intermittent module faults. After a battery replacement on any modern Porsche, the new battery has to be coded to the body control module so the charging system adapts to its age and chemistry. Skipping this step is the most common reason a perfectly fine replacement battery wears out early. See automotive electrical system repair for the broader electrical-systems context.
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Tell us the year, make, model, and what you are noticing, and we will say what to check first.
05 of 06, Porsche dealer
Porsche dealer vs Kneble's: drive time and approach
The nearest Porsche dealer is 45 minutes to an hour up the Garden State Parkway. We are five minutes from Route 40 and Route 322, with a write-up while you wait. The dealer and the independent shop use OEM-spec parts from the same supply chain on most common Porsche jobs.
Read more about Porsche dealer vs Kneble's: drive time and approach
When the dealer is the right call
Active recalls (the PPN online reflash is free at the dealer and cannot be done outside the dealer's software environment), warranty-covered work, software flashes and module reprogramming on most newer chassis, and key or immobilizer coding on newer chassis.
When Kneble's is the right call
Everything else routine: diagnostics, maintenance, brakes, suspension (PASM, air ride), PDK fluid service, AOS replacement, water pump, electrical work, drivability, pre-purchase inspections. Same diagnostic depth at independent labor.
A routine Porsche service or diagnostic should not require a Parkway drive. Get a second written estimate from us first.
Get a second estimate06 of 06, How Kneble's
How Kneble's protects your Porsche warranty (Magnuson-Moss in plain English)
The federal Magnuson-Moss Warranty Act prohibits Porsche from voiding a warranty because the owner used an independent shop for routine work, as long as the work is documented and the correct parts and fluids are used. Kneble's documents every Porsche service in writing, uses OEM-spec parts and fluids, and refers any warranty-eligible repair back to the dealer. The owner keeps both the warranty and the lower independent labor on routine items.
Read more about How Kneble's protects your Porsche warranty (Magnuson-Moss in plain English)
What the act actually says
Magnuson-Moss is a 1975 federal consumer-protection law. The piece that matters for Porsche owners: a manufacturer cannot void a warranty just because the owner used an independent shop or aftermarket parts, unless the manufacturer can prove the independent shop's work or part directly caused the warranty-claimed failure.
What you keep
Every service record we hand you (printed receipt and digital copy). Parts receipts. The maintenance log. If a dealer ever pushes back on a warranty claim, those documents are the defense.
What we always refer to the dealer
Recall reflashes. PPN online flashes. Software updates and module reprogramming on most newer Porsches. Key programming on newer chassis. Warranty-covered repairs. HV battery work on Macan and Cayenne hybrid trims. When any of those come up, we hand off the documentation and the recommendation on the spot.
Call the shop or request an appointment and include the vehicle year, make, model, mileage, and symptoms.
FAQs
Porsche repair FAQs
Do you use OEM Porsche parts?
Genuine Porsche where the platform demands it. Trusted aftermarket from brands we have used for decades when appropriate. The written estimate tells you which is which before the work begins so you can decide on the parts choice.
Is it safe to drive my Porsche with the check engine light on?
A steady check engine light usually means a stored emissions or powertrain fault that needs attention but does not require an immediate stop. A blinking check engine light means an active misfire; do not drive far because raw fuel reaching the catalytic converter can damage it in one tank of gas. Either way, bring the car in same week and we will scan it.
Can you read every Porsche system, not just the check engine light?
Yes. Opus scan tool with Porsche protocol packs plus PIWIS-compatible workflows read every accessible control module: engine, PDK, ABS, PSM, SRS, PASM, air suspension where equipped, body, PCM, PCCM, and the cluster. A generic OBD-II reader sees the federal-emissions subset only.
Does using an independent shop void my Porsche factory warranty?
No. The Magnuson-Moss Warranty Act prohibits Porsche from voiding a warranty just because the owner used an independent shop for routine work, as long as the work is documented and the correct parts and fluids are used. We document every visit, use OEM-spec parts, and refer warranty-eligible items back to the dealer.
Do you work on Cayenne and Panamera air suspension?
Yes. Bag leaks, compressor wear, valve-block faults, and height-sensor drift are regular jobs here. We pressure-test the system, isolate the corner, and quote the repair before the work begins.
How long does a Porsche diagnostic take?
A basic scan and code pull is 30 to 45 minutes. A full network scan with freeze-frame analysis and physical verification is 60 to 90 minutes. Air-suspension leak-down testing on a Cayenne or Panamera can run two hours. We tell you the timeline on the phone before you drop the car.
Can you program new Porsche modules and code replacement parts?
Yes for what the PIWIS-compatible tooling supports: battery registration, PDK adaptation refresh, throttle body adaptation, steering angle calibration, ride-height calibration after air-strut replacement, and most module-to-module coding. Full PPN online software flashes and key programming on newer chassis still require the dealer; we say so on the phone before you book.
Do you service GT3, GT4, Cup cars, or PCCB ceramic brakes?
GT-line cars (GT3, GT4, GT2, Cayman GT4) and Cup work go to a marque-specialty performance shop. We can do most jobs on PCCB-equipped cars, but PCCB ceramic brake first install and bedding refers out to a specialty shop because the fitment and bedding procedure benefits from a shop that does the first install often.
Will the check engine light come on for every Porsche problem?
No. Most Porsche systems are monitored by sensors and the cluster will flag a fault early, but some component failures happen without a warning light first, and some faults log a stored code without lighting the dash. That is why we recommend a maintenance scan during routine service, not just reactive scans when something is already wrong. A 30-minute full-module scan during an oil change catches the pending codes before they become a tow.
Further reading and viewing
Related Kneble's coverage for Porsche and foreign-make owners
European luxury and diagnostic-related content from the Kneble's library if you want to dig deeper.
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Local shop
Visit Kneble's in Mays Landing
5473 Somers Point Road, Mays Landing, NJ 08330
Five minutes off Route 40 between the Hamilton Mall and Lake Lenape. Ten minutes from the Atlantic City Expressway Exit 17. Twelve minutes from Egg Harbor Township and Northfield. Fifteen minutes from Somers Point along Mays Landing-Somers Point Road. From Folsom or Buena Vista, take 322 east, then south on Somers Point Road. Freddy J's Bar & Kitchen is right next door at 5698 Somers Point Road if you want to grab food before or after the appointment.
- Mon to Fri 8am to 5pm
- Saturday 8am to 4pm
- Sunday Closed
Reviews
Trusted by South Jersey drivers
Customers come to Kneble's for clear communication, practical recommendations, and repairs handled by a local team they can reach directly.
Friendly receptionist. In and out within 45 mins.
Janet Jackson, Google review
Service was performed quickly and the Kneble Team provided great communication throughout the visit.
Robert Orzechowski, Google review
Excellent quick service by personable staff and very qualified techs at a reasonable charge.
Glenn Peterson, Google review
Very good service here. Treated us very well. Great conversation with Carmen.
Gary Mazzone, Google review